(function(){

var nv = window.nv || {};

nv.version = '0.0.1a';
nv.dev = true //set false when in production

window.nv = nv;

nv.tooltip = {}; // For the tooltip system
nv.utils = {}; // Utility subsystem
nv.models = {}; //stores all the possible models/components
nv.charts = {}; //stores all the ready to use charts
nv.graphs = []; //stores all the graphs currently on the page
nv.logs = {}; //stores some statistics and potential error messages

nv.dispatch = d3.dispatch('render_start', 'render_end');

// *************************************************************************
//  Development render timers - disabled if dev = false

if (nv.dev) {
  nv.dispatch.on('render_start', function(e) {
    nv.logs.startTime = +new Date();
  });

  nv.dispatch.on('render_end', function(e) {
    nv.logs.endTime = +new Date();
    nv.logs.totalTime = nv.logs.endTime - nv.logs.startTime;
    nv.log('total', nv.logs.totalTime); // used for development, to keep track of graph generation times
  });
}

// ********************************************
//  Public Core NV functions

// Logs all arguments, and returns the last so you can test things in place
nv.log = function() {
  if (nv.dev && console.log && console.log.apply)
    console.log.apply(console, arguments)
  else if (nv.dev && console.log && Function.prototype.bind) {
    var log = Function.prototype.bind.call(console.log, console);
    log.apply(console, arguments);
  }
  return arguments[arguments.length - 1];
};


nv.render = function render(step) {
  step = step || 1; // number of graphs to generate in each timeout loop

  nv.render.active = true;
  nv.dispatch.render_start();

  setTimeout(function() {
    var chart, graph;

    for (var i = 0; i < step && (graph = nv.render.queue[i]); i++) {
      chart = graph.generate();
      if (typeof graph.callback == typeof(Function)) graph.callback(chart);
      nv.graphs.push(chart);
    }

    nv.render.queue.splice(0, i);

    if (nv.render.queue.length) setTimeout(arguments.callee, 0);
    else { nv.render.active = false; nv.dispatch.render_end(); }
  }, 0);
};

nv.render.active = false;
nv.render.queue = [];

nv.addGraph = function(obj) {
  if (typeof arguments[0] === typeof(Function))
    obj = {generate: arguments[0], callback: arguments[1]};

  nv.render.queue.push(obj);

  if (!nv.render.active) nv.render();
};

nv.identity = function(d) { return d; };

nv.strip = function(s) { return s.replace(/(\s|&)/g,''); };

function daysInMonth(month,year) {
  return (new Date(year, month+1, 0)).getDate();
}

function d3_time_range(floor, step, number) {
  return function(t0, t1, dt) {
    var time = floor(t0), times = [];
    if (time < t0) step(time);
    if (dt > 1) {
      while (time < t1) {
        var date = new Date(+time);
        if ((number(date) % dt === 0)) times.push(date);
        step(time);
      }
    } else {
      while (time < t1) { times.push(new Date(+time)); step(time); }
    }
    return times;
  };
}

d3.time.monthEnd = function(date) {
  return new Date(date.getFullYear(), date.getMonth(), 0);
};

d3.time.monthEnds = d3_time_range(d3.time.monthEnd, function(date) {
    date.setUTCDate(date.getUTCDate() + 1);
    date.setDate(daysInMonth(date.getMonth() + 1, date.getFullYear()));
  }, function(date) {
    return date.getMonth();
  }
);


/*****
 * A no-frills tooltip implementation.
 *****/


(function() {

  var nvtooltip = window.nv.tooltip = {};

  nvtooltip.show = function(pos, content, gravity, dist, parentContainer, classes) {

    var container = document.createElement('div');
        container.className = 'nvtooltip ' + (classes ? classes : 'xy-tooltip');

    gravity = gravity || 's';
    dist = dist || 20;

    var body = parentContainer ? parentContainer : document.getElementsByTagName('body')[0];

    container.innerHTML = content;
    container.style.left = 0;
    container.style.top = 0;
    container.style.opacity = 0;

    body.appendChild(container);

    var height = parseInt(container.offsetHeight),
        width = parseInt(container.offsetWidth),
        windowWidth = nv.utils.windowSize().width,
        windowHeight = nv.utils.windowSize().height,
        scrollTop = window.scrollY,
        scrollLeft = window.scrollX,
        left, top;

    windowHeight = window.innerWidth >= document.body.scrollWidth ? windowHeight : windowHeight - 16;
    windowWidth = window.innerHeight >= document.body.scrollHeight ? windowWidth : windowWidth - 16;

    var tooltipTop = function ( Elem ) {
        var offsetTop = top;
        do {
            if( !isNaN( Elem.offsetTop ) ) {
                offsetTop += (Elem.offsetTop);
            }
        } while( Elem = Elem.offsetParent );
        return offsetTop;
    }

    var tooltipLeft = function ( Elem ) {
        var offsetLeft = left;
        do {
            if( !isNaN( Elem.offsetLeft ) ) {
                offsetLeft += (Elem.offsetLeft);
            }
        } while( Elem = Elem.offsetParent );
        return offsetLeft;
    }

    switch (gravity) {
      case 'e':
        left = pos[0] - width - dist;
        top = pos[1] - (height / 2);
        var tLeft = tooltipLeft(container);
        var tTop = tooltipTop(container);
        if (tLeft < scrollLeft) left = pos[0] + dist > scrollLeft ? pos[0] + dist : scrollLeft - tLeft + left;
        if (tTop < scrollTop) top = scrollTop - tTop + top;
        if (tTop + height > scrollTop + windowHeight) top = scrollTop + windowHeight - tTop + top - height;
        break;
      case 'w':
        left = pos[0] + dist;
        top = pos[1] - (height / 2);
        if (tLeft + width > windowWidth) left = pos[0] - width - dist;
        if (tTop < scrollTop) top = scrollTop + 5;
        if (tTop + height > scrollTop + windowHeight) top = scrollTop - height - 5;
        break;
      case 'n':
        left = pos[0] - (width / 2) - 5;
        top = pos[1] + dist;
        var tLeft = tooltipLeft(container);
        var tTop = tooltipTop(container);
        if (tLeft < scrollLeft) left = scrollLeft + 5;
        if (tLeft + width > windowWidth) left = left - width/2 + 5;
        if (tTop + height > scrollTop + windowHeight) top = scrollTop + windowHeight - tTop + top - height;
        break;
      case 's':
        left = pos[0] - (width / 2);
        top = pos[1] - height - dist;
        var tLeft = tooltipLeft(container);
        var tTop = tooltipTop(container);
        if (tLeft < scrollLeft) left = scrollLeft + 5;
        if (tLeft + width > windowWidth) left = left - width/2 + 5;
        if (scrollTop > tTop) top = scrollTop;
        break;
    }


    container.style.left = left+'px';
    container.style.top = top+'px';
    container.style.opacity = 1;
    container.style.position = 'absolute'; //fix scroll bar issue
    container.style.pointerEvents = 'none'; //fix scroll bar issue

    return container;
  };

  nvtooltip.cleanup = function() {

      // Find the tooltips, mark them for removal by this class (so others cleanups won't find it)
      var tooltips = document.getElementsByClassName('nvtooltip');
      var purging = [];
      while(tooltips.length) {
        purging.push(tooltips[0]);
        tooltips[0].style.transitionDelay = '0 !important';
        tooltips[0].style.opacity = 0;
        tooltips[0].className = 'nvtooltip-pending-removal';
      }


      setTimeout(function() {

          while (purging.length) {
             var removeMe = purging.pop();
              removeMe.parentNode.removeChild(removeMe);
          }
    }, 500);
  };


})();

nv.utils.windowSize = function() {
    // Sane defaults
    var size = {width: 640, height: 480};

    // Earlier IE uses Doc.body
    if (document.body && document.body.offsetWidth) {
        size.width = document.body.offsetWidth;
        size.height = document.body.offsetHeight;
    }

    // IE can use depending on mode it is in
    if (document.compatMode=='CSS1Compat' &&
        document.documentElement &&
        document.documentElement.offsetWidth ) {
        size.width = document.documentElement.offsetWidth;
        size.height = document.documentElement.offsetHeight;
    }

    // Most recent browsers use
    if (window.innerWidth && window.innerHeight) {
        size.width = window.innerWidth;
        size.height = window.innerHeight;
    }
    return (size);
};



// Easy way to bind multiple functions to window.onresize
// TODO: give a way to remove a function after its bound, other than removing all of them
nv.utils.windowResize = function(fun){
  var oldresize = window.onresize;

  window.onresize = function(e) {
    if (typeof oldresize == 'function') oldresize(e);
    fun(e);
  }
}

// Backwards compatible way to implement more d3-like coloring of graphs.
// If passed an array, wrap it in a function which implements the old default
// behavior
nv.utils.getColor = function(color) {
    if (!arguments.length) return nv.utils.defaultColor(); //if you pass in nothing, get default colors back

    if( Object.prototype.toString.call( color ) === '[object Array]' )
        return function(d, i) { return d.color || color[i % color.length]; };
    else
        return color;
        //can't really help it if someone passes rubbish as color
}

// Default color chooser uses the index of an object as before.
nv.utils.defaultColor = function() {
    var colors = d3.scale.category20().range();
    return function(d, i) { return d.color || colors[i % colors.length] };
}


// Returns a color function that takes the result of 'getKey' for each series and
// looks for a corresponding color from the dictionary,
nv.utils.customTheme = function(dictionary, getKey, defaultColors) {
  getKey = getKey || function(series) { return series.key }; // use default series.key if getKey is undefined
  defaultColors = defaultColors || d3.scale.category20().range(); //default color function

  var defIndex = defaultColors.length; //current default color (going in reverse)

  return function(series, index) {
    var key = getKey(series);

    if (!defIndex) defIndex = defaultColors.length; //used all the default colors, start over

    if (typeof dictionary[key] !== "undefined")
      return (typeof dictionary[key] === "function") ? dictionary[key]() : dictionary[key];
    else
      return defaultColors[--defIndex]; // no match in dictionary, use default color
  }
}



// From the PJAX example on d3js.org, while this is not really directly needed
// it's a very cool method for doing pjax, I may expand upon it a little bit,
// open to suggestions on anything that may be useful
nv.utils.pjax = function(links, content) {
  d3.selectAll(links).on("click", function() {
    history.pushState(this.href, this.textContent, this.href);
    load(this.href);
    d3.event.preventDefault();
  });

  function load(href) {
    d3.html(href, function(fragment) {
      var target = d3.select(content).node();
      target.parentNode.replaceChild(d3.select(fragment).select(content).node(), target);
      nv.utils.pjax(links, content);
    });
  }

  d3.select(window).on("popstate", function() {
    if (d3.event.state) load(d3.event.state);
  });
}

nv.models.axis = function() {

  //============================================================
  // Public Variables with Default Settings
  //------------------------------------------------------------

  var axis = d3.svg.axis()
    ;

  var margin = {top: 0, right: 0, bottom: 0, left: 0}
    , width = 75 //only used for tickLabel currently
    , height = 60 //only used for tickLabel currently
    , scale = d3.scale.linear()
    , axisLabelText = null
    , showMaxMin = true //TODO: showMaxMin should be disabled on all ordinal scaled axes
    , highlightZero = true
    , rotateLabels = 0
    , rotateYLabel = true
    , staggerLabels = false
    , isOrdinal = false
    , ticks = null
    ;

  axis
    .scale(scale)
    .orient('bottom')
    .tickFormat(function(d) { return d })
    ;

  //============================================================


  //============================================================
  // Private Variables
  //------------------------------------------------------------

  var scale0;

  //============================================================


  function chart(selection) {
    selection.each(function(data) {
      var container = d3.select(this);


      //------------------------------------------------------------
      // Setup containers and skeleton of chart

      var wrap = container.selectAll('g.nv-wrap.nv-axis').data([data]);
      var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-axis');
      var gEnter = wrapEnter.append('g');
      var g = wrap.select('g')

      //------------------------------------------------------------


      if (ticks !== null)
        axis.ticks(ticks);
      else if (axis.orient() == 'top' || axis.orient() == 'bottom')
        axis.ticks(Math.abs(scale.range()[1] - scale.range()[0]) / 100);


      //TODO: consider calculating width/height based on whether or not label is added, for reference in charts using this component


      d3.transition(g)
          .call(axis);

      scale0 = scale0 || axis.scale();

      var fmt = axis.tickFormat();
      if (fmt == null) {
        fmt = scale0.tickFormat();
      }

      var axisLabel = g.selectAll('text.nv-axislabel')
          .data([axisLabelText || null]);
      axisLabel.exit().remove();
      switch (axis.orient()) {
        case 'top':
          axisLabel.enter().append('text').attr('class', 'nv-axislabel');
          var w = (scale.range().length==2) ? scale.range()[1] : (scale.range()[scale.range().length-1]+(scale.range()[1]-scale.range()[0]));
          axisLabel
              .attr('text-anchor', 'middle')
              .attr('y', 0)
              .attr('x', w/2);
          if (showMaxMin) {
            var axisMaxMin = wrap.selectAll('g.nv-axisMaxMin')
                           .data(scale.domain());
            axisMaxMin.enter().append('g').attr('class', 'nv-axisMaxMin').append('text');
            axisMaxMin.exit().remove();
            axisMaxMin
                .attr('transform', function(d,i) {
                  return 'translate(' + scale(d) + ',0)'
                })
              .select('text')
                .attr('dy', '0em')
                .attr('y', -axis.tickPadding())
                .attr('text-anchor', 'middle')
                .text(function(d,i) {
                  var v = fmt(d);
                  return ('' + v).match('NaN') ? '' : v;
                });
            d3.transition(axisMaxMin)
                .attr('transform', function(d,i) {
                  return 'translate(' + scale.range()[i] + ',0)'
                });
          }
          break;
        case 'bottom':
          var xLabelMargin = 36;
          var maxTextWidth = 30;
          var xTicks = g.selectAll('g').select("text");
          if (rotateLabels%360) {
            //Calculate the longest xTick width
            xTicks.each(function(d,i){
              var width = this.getBBox().width;
              if(width > maxTextWidth) maxTextWidth = width;
            });
            //Convert to radians before calculating sin. Add 30 to margin for healthy padding.
            var sin = Math.abs(Math.sin(rotateLabels*Math.PI/180));
            var xLabelMargin = (sin ? sin*maxTextWidth : maxTextWidth)+30;
            //Rotate all xTicks
            xTicks
              .attr('transform', function(d,i,j) { return 'rotate(' + rotateLabels + ' 0,0)' })
              .attr('text-anchor', rotateLabels%360 > 0 ? 'start' : 'end');
          }
          axisLabel.enter().append('text').attr('class', 'nv-axislabel');
          var w = (scale.range().length==2) ? scale.range()[1] : (scale.range()[scale.range().length-1]+(scale.range()[1]-scale.range()[0]));
          axisLabel
              .attr('text-anchor', 'middle')
              .attr('y', xLabelMargin)
              .attr('x', w/2);
          if (showMaxMin) {
          //if (showMaxMin && !isOrdinal) {
            var axisMaxMin = wrap.selectAll('g.nv-axisMaxMin')
                           //.data(scale.domain())
                           .data([scale.domain()[0], scale.domain()[scale.domain().length - 1]]);
            axisMaxMin.enter().append('g').attr('class', 'nv-axisMaxMin').append('text');
            axisMaxMin.exit().remove();
            axisMaxMin
                .attr('transform', function(d,i) {
                  return 'translate(' + (scale(d) + (isOrdinal ? scale.rangeBand() / 2 : 0)) + ',0)'
                })
              .select('text')
                .attr('dy', '.71em')
                .attr('y', axis.tickPadding())
                .attr('transform', function(d,i,j) { return 'rotate(' + rotateLabels + ' 0,0)' })
                .attr('text-anchor', rotateLabels ? (rotateLabels%360 > 0 ? 'start' : 'end') : 'middle')
                .text(function(d,i) {
                  var v = fmt(d);
                  return ('' + v).match('NaN') ? '' : v;
                });
            d3.transition(axisMaxMin)
                .attr('transform', function(d,i) {
                  //return 'translate(' + scale.range()[i] + ',0)'
                  //return 'translate(' + scale(d) + ',0)'
                  return 'translate(' + (scale(d) + (isOrdinal ? scale.rangeBand() / 2 : 0)) + ',0)'
                });
          }
          if (staggerLabels)
            xTicks
                .attr('transform', function(d,i) { return 'translate(0,' + (i % 2 == 0 ? '0' : '12') + ')' });

          break;
        case 'right':
          axisLabel.enter().append('text').attr('class', 'nv-axislabel');
          axisLabel
              .attr('text-anchor', rotateYLabel ? 'middle' : 'begin')
              .attr('transform', rotateYLabel ? 'rotate(90)' : '')
              .attr('y', rotateYLabel ? (-Math.max(margin.right,width) + 12) : -10) //TODO: consider calculating this based on largest tick width... OR at least expose this on chart
              .attr('x', rotateYLabel ? (scale.range()[0] / 2) : axis.tickPadding());
          if (showMaxMin) {
            var axisMaxMin = wrap.selectAll('g.nv-axisMaxMin')
                           .data(scale.domain());
            axisMaxMin.enter().append('g').attr('class', 'nv-axisMaxMin').append('text')
                .style('opacity', 0);
            axisMaxMin.exit().remove();
            axisMaxMin
                .attr('transform', function(d,i) {
                  return 'translate(0,' + scale(d) + ')'
                })
              .select('text')
                .attr('dy', '.32em')
                .attr('y', 0)
                .attr('x', axis.tickPadding())
                .attr('text-anchor', 'start')
                .text(function(d,i) {
                  var v = fmt(d);
                  return ('' + v).match('NaN') ? '' : v;
                });
            d3.transition(axisMaxMin)
                .attr('transform', function(d,i) {
                  return 'translate(0,' + scale.range()[i] + ')'
                })
              .select('text')
                .style('opacity', 1);
          }
          break;
        case 'left':
          /*
          //For dynamically placing the label. Can be used with dynamically-sized chart axis margins
          var yTicks = g.selectAll('g').select("text");
          yTicks.each(function(d,i){
            var labelPadding = this.getBBox().width + axis.tickPadding() + 16;
            if(labelPadding > width) width = labelPadding;
          });
          */
          axisLabel.enter().append('text').attr('class', 'nv-axislabel');
          axisLabel
              .attr('text-anchor', rotateYLabel ? 'middle' : 'end')
              .attr('transform', rotateYLabel ? 'rotate(-90)' : '')
              .attr('y', rotateYLabel ? (-Math.max(margin.left,width) + 12) : -10) //TODO: consider calculating this based on largest tick width... OR at least expose this on chart
              .attr('x', rotateYLabel ? (-scale.range()[0] / 2) : -axis.tickPadding());
          if (showMaxMin) {
            var axisMaxMin = wrap.selectAll('g.nv-axisMaxMin')
                           .data(scale.domain());
            axisMaxMin.enter().append('g').attr('class', 'nv-axisMaxMin').append('text')
                .style('opacity', 0);
            axisMaxMin.exit().remove();
            axisMaxMin
                .attr('transform', function(d,i) {
                  return 'translate(0,' + scale0(d) + ')'
                })
              .select('text')
                .attr('dy', '.32em')
                .attr('y', 0)
                .attr('x', -axis.tickPadding())
                .attr('text-anchor', 'end')
                .text(function(d,i) {
                  var v = fmt(d);
                  return ('' + v).match('NaN') ? '' : v;
                });
            d3.transition(axisMaxMin)
                .attr('transform', function(d,i) {
                  return 'translate(0,' + scale.range()[i] + ')'
                })
              .select('text')
                .style('opacity', 1);
          }
          break;
      }
      axisLabel
          .text(function(d) { return d });


      if (showMaxMin && (axis.orient() === 'left' || axis.orient() === 'right')) {
        //check if max and min overlap other values, if so, hide the values that overlap
        g.selectAll('g') // the g's wrapping each tick
            .each(function(d,i) {
              d3.select(this).select('text').attr('opacity', 1);
              if (scale(d) < scale.range()[1] + 10 || scale(d) > scale.range()[0] - 10) { // 10 is assuming text height is 16... if d is 0, leave it!
                if (d > 1e-10 || d < -1e-10) // accounts for minor floating point errors... though could be problematic if the scale is EXTREMELY SMALL
                  d3.select(this).attr('opacity', 0);
                
                d3.select(this).select('text').attr('opacity', 0); // Don't remove the ZERO line!!
              }
            });

        //if Max and Min = 0 only show min, Issue #281
        if (scale.domain()[0] == scale.domain()[1] && scale.domain()[0] == 0)
          wrap.selectAll('g.nv-axisMaxMin')
            .style('opacity', function(d,i) { return !i ? 1 : 0 });

      }

      if (showMaxMin && (axis.orient() === 'top' || axis.orient() === 'bottom')) {
        var maxMinRange = [];
        wrap.selectAll('g.nv-axisMaxMin')
            .each(function(d,i) {
              try {
                  if (i) // i== 1, max position
                      maxMinRange.push(scale(d) - this.getBBox().width - 4)  //assuming the max and min labels are as wide as the next tick (with an extra 4 pixels just in case)
                  else // i==0, min position
                      maxMinRange.push(scale(d) + this.getBBox().width + 4)
              }catch (err) {
                  if (i) // i== 1, max position
                      maxMinRange.push(scale(d) - 4)  //assuming the max and min labels are as wide as the next tick (with an extra 4 pixels just in case)
                  else // i==0, min position
                      maxMinRange.push(scale(d) + 4)
              }
            });
        g.selectAll('g') // the g's wrapping each tick
            .each(function(d,i) {
              if (scale(d) < maxMinRange[0] || scale(d) > maxMinRange[1]) {
                if (d > 1e-10 || d < -1e-10) // accounts for minor floating point errors... though could be problematic if the scale is EXTREMELY SMALL
                  d3.select(this).remove();
                else
                  d3.select(this).select('text').remove(); // Don't remove the ZERO line!!
              }
            });
      }


      //highlight zero line ... Maybe should not be an option and should just be in CSS?
      if (highlightZero)
        g.selectAll('line.tick')
          .filter(function(d) { return !parseFloat(Math.round(d*100000)/1000000) }) //this is because sometimes the 0 tick is a very small fraction, TODO: think of cleaner technique
            .classed('zero', true);

      //store old scales for use in transitions on update
      scale0 = scale.copy();

    });

    return chart;
  }


  //============================================================
  // Expose Public Variables
  //------------------------------------------------------------

  // expose chart's sub-components
  chart.axis = axis;

  d3.rebind(chart, axis, 'orient', 'tickValues', 'tickSubdivide', 'tickSize', 'tickPadding', 'tickFormat');
  d3.rebind(chart, scale, 'domain', 'range', 'rangeBand', 'rangeBands'); //these are also accessible by chart.scale(), but added common ones directly for ease of use

  chart.margin = function(_) {
    if(!arguments.length) return margin;
    margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
    margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
    margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
    margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
    return chart;
  }

  chart.width = function(_) {
    if (!arguments.length) return width;
    width = _;
    return chart;
  };

  chart.ticks = function(_) {
    if (!arguments.length) return ticks;
    ticks = _;
    return chart;
  };

  chart.height = function(_) {
    if (!arguments.length) return height;
    height = _;
    return chart;
  };

  chart.axisLabel = function(_) {
    if (!arguments.length) return axisLabelText;
    axisLabelText = _;
    return chart;
  }

  chart.showMaxMin = function(_) {
    if (!arguments.length) return showMaxMin;
    showMaxMin = _;
    return chart;
  }

  chart.highlightZero = function(_) {
    if (!arguments.length) return highlightZero;
    highlightZero = _;
    return chart;
  }

  chart.scale = function(_) {
    if (!arguments.length) return scale;
    scale = _;
    axis.scale(scale);
    isOrdinal = typeof scale.rangeBands === 'function';
    d3.rebind(chart, scale, 'domain', 'range', 'rangeBand', 'rangeBands');
    return chart;
  }

  chart.rotateYLabel = function(_) {
    if(!arguments.length) return rotateYLabel;
    rotateYLabel = _;
    return chart;
  }

  chart.rotateLabels = function(_) {
    if(!arguments.length) return rotateLabels;
    rotateLabels = _;
    return chart;
  }

  chart.staggerLabels = function(_) {
    if (!arguments.length) return staggerLabels;
    staggerLabels = _;
    return chart;
  };


  //============================================================


  return chart;
}
//TODO: consider deprecating and using multibar with single series for this
nv.models.historicalBar = function() {

  //============================================================
  // Public Variables with Default Settings
  //------------------------------------------------------------

  var margin = {top: 0, right: 0, bottom: 0, left: 0}
    , width = 960
    , height = 500
    , id = Math.floor(Math.random() * 10000) //Create semi-unique ID in case user doesn't select one
    , x = d3.scale.linear()
    , y = d3.scale.linear()
    , getX = function(d) { return d.x }
    , getY = function(d) { return d.y }
    , forceX = []
    , forceY = [0]
    , padData = false
    , clipEdge = true
    , color = nv.utils.defaultColor()
    , xDomain
    , yDomain
    , dispatch = d3.dispatch('chartClick', 'elementClick', 'elementDblClick', 'elementMouseover', 'elementMouseout')
    ;

  //============================================================


  function chart(selection) {
    selection.each(function(data) {
      var availableWidth = width - margin.left - margin.right,
          availableHeight = height - margin.top - margin.bottom,
          container = d3.select(this);


      //------------------------------------------------------------
      // Setup Scales

      x   .domain(xDomain || d3.extent(data[0].values.map(getX).concat(forceX) ))

      if (padData)
        x.range([availableWidth * .5 / data[0].values.length, availableWidth * (data[0].values.length - .5)  / data[0].values.length ]);
      else
        x.range([0, availableWidth]);

      y   .domain(yDomain || d3.extent(data[0].values.map(getY).concat(forceY) ))
          .range([availableHeight, 0]);

      // If scale's domain don't have a range, slightly adjust to make one... so a chart can show a single data point
      if (x.domain()[0] === x.domain()[1] || y.domain()[0] === y.domain()[1]) singlePoint = true;
      if (x.domain()[0] === x.domain()[1])
        x.domain()[0] ?
            x.domain([x.domain()[0] - x.domain()[0] * 0.01, x.domain()[1] + x.domain()[1] * 0.01])
          : x.domain([-1,1]);

      if (y.domain()[0] === y.domain()[1])
        y.domain()[0] ?
            y.domain([y.domain()[0] + y.domain()[0] * 0.01, y.domain()[1] - y.domain()[1] * 0.01])
          : y.domain([-1,1]);

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup containers and skeleton of chart

      var wrap = container.selectAll('g.nv-wrap.nv-bar').data([data[0].values]);
      var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-bar');
      var defsEnter = wrapEnter.append('defs');
      var gEnter = wrapEnter.append('g');
      var g = wrap.select('g');

      gEnter.append('g').attr('class', 'nv-bars');

      wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');

      //------------------------------------------------------------


      container
          .on('click', function(d,i) {
            dispatch.chartClick({
                data: d,
                index: i,
                pos: d3.event,
                id: id
            });
          });


      defsEnter.append('clipPath')
          .attr('id', 'nv-chart-clip-path-' + id)
        .append('rect');

      wrap.select('#nv-chart-clip-path-' + id + ' rect')
          .attr('width', availableWidth)
          .attr('height', availableHeight);

      g   .attr('clip-path', clipEdge ? 'url(#nv-chart-clip-path-' + id + ')' : '');



      var bars = wrap.select('.nv-bars').selectAll('.nv-bar')
          .data(function(d) { return d });

      bars.exit().remove();


      var barsEnter = bars.enter().append('rect')
          //.attr('class', function(d,i,j) { return (getY(d,i) < 0 ? 'nv-bar negative' : 'nv-bar positive') + ' nv-bar-' + j + '-' + i })
          .attr('x', 0 )
          .attr('y', function(d,i) {  return y(Math.max(0, getY(d,i))) })
          .attr('height', function(d,i) { return Math.abs(y(getY(d,i)) - y(0)) })
          .on('mouseover', function(d,i) {
            d3.select(this).classed('hover', true);
            dispatch.elementMouseover({
                point: d,
                series: data[0],
                pos: [x(getX(d,i)), y(getY(d,i))],  // TODO: Figure out why the value appears to be shifted
                pointIndex: i,
                seriesIndex: 0,
                e: d3.event
            });

          })
          .on('mouseout', function(d,i) {
                d3.select(this).classed('hover', false);
                dispatch.elementMouseout({
                    point: d,
                    series: data[0],
                    pointIndex: i,
                    seriesIndex: 0,
                    e: d3.event
                });
          })
          .on('click', function(d,i) {
                dispatch.elementClick({
                    //label: d[label],
                    value: getY(d,i),
                    data: d,
                    index: i,
                    pos: [x(getX(d,i)), y(getY(d,i))],
                    e: d3.event,
                    id: id
                });
              d3.event.stopPropagation();
          })
          .on('dblclick', function(d,i) {
              dispatch.elementDblClick({
                  //label: d[label],
                  value: getY(d,i),
                  data: d,
                  index: i,
                  pos: [x(getX(d,i)), y(getY(d,i))],
                  e: d3.event,
                  id: id
              });
              d3.event.stopPropagation();
          });

      bars
          .attr('fill', function(d,i) { return color(d, i); })
          .attr('class', function(d,i,j) { return (getY(d,i) < 0 ? 'nv-bar negative' : 'nv-bar positive') + ' nv-bar-' + j + '-' + i })
          .attr('transform', function(d,i) { return 'translate(' + (x(getX(d,i)) - availableWidth / data[0].values.length * .45) + ',0)'; })  //TODO: better width calculations that don't assume always uniform data spacing;w
          .attr('width', (availableWidth / data[0].values.length) * .9 )


      d3.transition(bars)
          //.attr('y', function(d,i) {  return y(Math.max(0, getY(d,i))) })
          .attr('y', function(d,i) {
            return getY(d,i) < 0 ?
                    y(0) :
                    y(0) - y(getY(d,i)) < 1 ?
                      y(0) - 1 :
                      y(getY(d,i))
          })
          .attr('height', function(d,i) { return Math.max(Math.abs(y(getY(d,i)) - y(0)),1) });
          //.order();  // not sure if this makes any sense for this model

    });

    return chart;
  }


  //============================================================
  // Expose Public Variables
  //------------------------------------------------------------

  chart.dispatch = dispatch;

  chart.x = function(_) {
    if (!arguments.length) return getX;
    getX = _;
    return chart;
  };

  chart.y = function(_) {
    if (!arguments.length) return getY;
    getY = _;
    return chart;
  };

  chart.margin = function(_) {
    if (!arguments.length) return margin;
    margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
    margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
    margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
    margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
    return chart;
  };

  chart.width = function(_) {
    if (!arguments.length) return width;
    width = _;
    return chart;
  };

  chart.height = function(_) {
    if (!arguments.length) return height;
    height = _;
    return chart;
  };

  chart.xScale = function(_) {
    if (!arguments.length) return x;
    x = _;
    return chart;
  };

  chart.yScale = function(_) {
    if (!arguments.length) return y;
    y = _;
    return chart;
  };

  chart.xDomain = function(_) {
    if (!arguments.length) return xDomain;
    xDomain = _;
    return chart;
  };

  chart.yDomain = function(_) {
    if (!arguments.length) return yDomain;
    yDomain = _;
    return chart;
  };

  chart.forceX = function(_) {
    if (!arguments.length) return forceX;
    forceX = _;
    return chart;
  };

  chart.forceY = function(_) {
    if (!arguments.length) return forceY;
    forceY = _;
    return chart;
  };

  chart.padData = function(_) {
    if (!arguments.length) return padData;
    padData = _;
    return chart;
  };

  chart.clipEdge = function(_) {
    if (!arguments.length) return clipEdge;
    clipEdge = _;
    return chart;
  };

  chart.color = function(_) {
    if (!arguments.length) return color;
    color = nv.utils.getColor(_);
    return chart;
  };

  chart.id = function(_) {
    if (!arguments.length) return id;
    id = _;
    return chart;
  };

  //============================================================


  return chart;
}

// Chart design based on the recommendations of Stephen Few. Implementation
// based on the work of Clint Ivy, Jamie Love, and Jason Davies.
// http://projects.instantcognition.com/protovis/bulletchart/

nv.models.bullet = function() {

  //============================================================
  // Public Variables with Default Settings
  //------------------------------------------------------------

  var margin = {top: 0, right: 0, bottom: 0, left: 0}
    , orient = 'left' // TODO top & bottom
    , reverse = false
    , ranges = function(d) { return d.ranges }
    , markers = function(d) { return d.markers }
    , measures = function(d) { return d.measures }
    , forceX = [0] // List of numbers to Force into the X scale (ie. 0, or a max / min, etc.)
    , width = 380
    , height = 30
    , tickFormat = null
    , color = nv.utils.getColor(['#1f77b4'])
    , dispatch = d3.dispatch('elementMouseover', 'elementMouseout')
    ;

  //============================================================


  function chart(selection) {
    selection.each(function(d, i) {
      var availableWidth = width - margin.left - margin.right,
          availableHeight = height - margin.top - margin.bottom,
          container = d3.select(this);

      var rangez = ranges.call(this, d, i).slice().sort(d3.descending),
          markerz = markers.call(this, d, i).slice().sort(d3.descending),
          measurez = measures.call(this, d, i).slice().sort(d3.descending);


      //------------------------------------------------------------
      // Setup Scales

      // Compute the new x-scale.
      var x1 = d3.scale.linear()
          .domain( d3.extent(d3.merge([forceX, rangez])) )
          .range(reverse ? [availableWidth, 0] : [0, availableWidth]);

      // Retrieve the old x-scale, if this is an update.
      var x0 = this.__chart__ || d3.scale.linear()
          .domain([0, Infinity])
          .range(x1.range());

      // Stash the new scale.
      this.__chart__ = x1;


      var rangeMin = d3.min(rangez), //rangez[2]
          rangeMax = d3.max(rangez), //rangez[0]
          rangeAvg = rangez[1];

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup containers and skeleton of chart

      var wrap = container.selectAll('g.nv-wrap.nv-bullet').data([d]);
      var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-bullet');
      var gEnter = wrapEnter.append('g');
      var g = wrap.select('g');

      gEnter.append('rect').attr('class', 'nv-range nv-rangeMax');
      gEnter.append('rect').attr('class', 'nv-range nv-rangeAvg');
      gEnter.append('rect').attr('class', 'nv-range nv-rangeMin');
      gEnter.append('rect').attr('class', 'nv-measure');
      gEnter.append('path').attr('class', 'nv-markerTriangle');

      wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');

      //------------------------------------------------------------



      var w0 = function(d) { return Math.abs(x0(d) - x0(0)) }, // TODO: could optimize by precalculating x0(0) and x1(0)
          w1 = function(d) { return Math.abs(x1(d) - x1(0)) };
      var xp0 = function(d) { return d < 0 ? x0(d) : x0(0) },
          xp1 = function(d) { return d < 0 ? x1(d) : x1(0) };


      g.select('rect.nv-rangeMax')
          .attr('height', availableHeight)
          .attr('width', w1(rangeMax > 0 ? rangeMax : rangeMin))
          .attr('x', xp1(rangeMax > 0 ? rangeMax : rangeMin))
          .datum(rangeMax > 0 ? rangeMax : rangeMin)
          /*
          .attr('x', rangeMin < 0 ?
                         rangeMax > 0 ?
                             x1(rangeMin)
                           : x1(rangeMax)
                       : x1(0))
                      */

      g.select('rect.nv-rangeAvg')
          .attr('height', availableHeight)
          .attr('width', w1(rangeAvg))
          .attr('x', xp1(rangeAvg))
          .datum(rangeAvg)
          /*
          .attr('width', rangeMax <= 0 ?
                             x1(rangeMax) - x1(rangeAvg)
                           : x1(rangeAvg) - x1(rangeMin))
          .attr('x', rangeMax <= 0 ?
                         x1(rangeAvg)
                       : x1(rangeMin))
                      */

      g.select('rect.nv-rangeMin')
          .attr('height', availableHeight)
          .attr('width', w1(rangeMax))
          .attr('x', xp1(rangeMax))
          .attr('width', w1(rangeMax > 0 ? rangeMin : rangeMax))
          .attr('x', xp1(rangeMax > 0 ? rangeMin : rangeMax))
          .datum(rangeMax > 0 ? rangeMin : rangeMax)
          /*
          .attr('width', rangeMax <= 0 ?
                             x1(rangeAvg) - x1(rangeMin)
                           : x1(rangeMax) - x1(rangeAvg))
          .attr('x', rangeMax <= 0 ?
                         x1(rangeMin)
                       : x1(rangeAvg))
                      */

      g.select('rect.nv-measure')
          .style('fill', color)
          .attr('height', availableHeight / 3)
          .attr('y', availableHeight / 3)
          .attr('width', measurez < 0 ?
                             x1(0) - x1(measurez[0])
                           : x1(measurez[0]) - x1(0))
          .attr('x', xp1(measurez))
          .on('mouseover', function() {
              dispatch.elementMouseover({
                value: measurez[0],
                label: 'Current',
                pos: [x1(measurez[0]), availableHeight/2]
              })
          })
          .on('mouseout', function() {
              dispatch.elementMouseout({
                value: measurez[0],
                label: 'Current'
              })
          })

      var h3 =  availableHeight / 6;
      if (markerz[0]) {
        g.selectAll('path.nv-markerTriangle')
            .attr('transform', function(d) { return 'translate(' + x1(markerz[0]) + ',' + (availableHeight / 2) + ')' })
            .attr('d', 'M0,' + h3 + 'L' + h3 + ',' + (-h3) + ' ' + (-h3) + ',' + (-h3) + 'Z')
            .on('mouseover', function() {
              dispatch.elementMouseover({
                value: markerz[0],
                label: 'Previous',
                pos: [x1(markerz[0]), availableHeight/2]
              })
            })
            .on('mouseout', function() {
              dispatch.elementMouseout({
                value: markerz[0],
                label: 'Previous'
              })
            });
      } else {
        g.selectAll('path.nv-markerTriangle').remove();
      }


      wrap.selectAll('.nv-range')
          .on('mouseover', function(d,i) {
            var label = !i ? "Maximum" : i == 1 ? "Mean" : "Minimum";

            dispatch.elementMouseover({
              value: d,
              label: label,
              pos: [x1(d), availableHeight/2]
            })
          })
          .on('mouseout', function(d,i) {
            var label = !i ? "Maximum" : i == 1 ? "Mean" : "Minimum";

            dispatch.elementMouseout({
              value: d,
              label: label
            })
          })

/* // THIS IS THE PREVIOUS BULLET IMPLEMENTATION, WILL REMOVE SHORTLY
      // Update the range rects.
      var range = g.selectAll('rect.nv-range')
          .data(rangez);

      range.enter().append('rect')
          .attr('class', function(d, i) { return 'nv-range nv-s' + i; })
          .attr('width', w0)
          .attr('height', availableHeight)
          .attr('x', reverse ? x0 : 0)
          .on('mouseover', function(d,i) { 
              dispatch.elementMouseover({
                value: d,
                label: (i <= 0) ? 'Maximum' : (i > 1) ? 'Minimum' : 'Mean', //TODO: make these labels a variable
                pos: [x1(d), availableHeight/2]
              })
          })
          .on('mouseout', function(d,i) { 
              dispatch.elementMouseout({
                value: d,
                label: (i <= 0) ? 'Minimum' : (i >=1) ? 'Maximum' : 'Mean' //TODO: make these labels a variable
              })
          })

      d3.transition(range)
          .attr('x', reverse ? x1 : 0)
          .attr('width', w1)
          .attr('height', availableHeight);


      // Update the measure rects.
      var measure = g.selectAll('rect.nv-measure')
          .data(measurez);

      measure.enter().append('rect')
          .attr('class', function(d, i) { return 'nv-measure nv-s' + i; })
          .style('fill', function(d,i) { return color(d,i ) })
          .attr('width', w0)
          .attr('height', availableHeight / 3)
          .attr('x', reverse ? x0 : 0)
          .attr('y', availableHeight / 3)
          .on('mouseover', function(d) { 
              dispatch.elementMouseover({
                value: d,
                label: 'Current', //TODO: make these labels a variable
                pos: [x1(d), availableHeight/2]
              })
          })
          .on('mouseout', function(d) { 
              dispatch.elementMouseout({
                value: d,
                label: 'Current' //TODO: make these labels a variable
              })
          })

      d3.transition(measure)
          .attr('width', w1)
          .attr('height', availableHeight / 3)
          .attr('x', reverse ? x1 : 0)
          .attr('y', availableHeight / 3);



      // Update the marker lines.
      var marker = g.selectAll('path.nv-markerTriangle')
          .data(markerz);

      var h3 =  availableHeight / 6;
      marker.enter().append('path')
          .attr('class', 'nv-markerTriangle')
          .attr('transform', function(d) { return 'translate(' + x0(d) + ',' + (availableHeight / 2) + ')' })
          .attr('d', 'M0,' + h3 + 'L' + h3 + ',' + (-h3) + ' ' + (-h3) + ',' + (-h3) + 'Z')
          .on('mouseover', function(d,i) {
              dispatch.elementMouseover({
                value: d,
                label: 'Previous',
                pos: [x1(d), availableHeight/2]
              })
          })
          .on('mouseout', function(d,i) {
              dispatch.elementMouseout({
                value: d,
                label: 'Previous'
              })
          });

      d3.transition(marker)
          .attr('transform', function(d) { return 'translate(' + (x1(d) - x1(0)) + ',' + (availableHeight / 2) + ')' });

      marker.exit().remove();
*/

    });

    // d3.timer.flush();  // Not needed?

    return chart;
  }


  //============================================================
  // Expose Public Variables
  //------------------------------------------------------------

  chart.dispatch = dispatch;

  // left, right, top, bottom
  chart.orient = function(_) {
    if (!arguments.length) return orient;
    orient = _;
    reverse = orient == 'right' || orient == 'bottom';
    return chart;
  };

  // ranges (bad, satisfactory, good)
  chart.ranges = function(_) {
    if (!arguments.length) return ranges;
    ranges = _;
    return chart;
  };

  // markers (previous, goal)
  chart.markers = function(_) {
    if (!arguments.length) return markers;
    markers = _;
    return chart;
  };

  // measures (actual, forecast)
  chart.measures = function(_) {
    if (!arguments.length) return measures;
    measures = _;
    return chart;
  };

  chart.forceX = function(_) {
    if (!arguments.length) return forceX;
    forceX = _;
    return chart;
  };

  chart.width = function(_) {
    if (!arguments.length) return width;
    width = _;
    return chart;
  };

  chart.height = function(_) {
    if (!arguments.length) return height;
    height = _;
    return chart;
  };

  chart.margin = function(_) {
    if (!arguments.length) return margin;
    margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
    margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
    margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
    margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
    return chart;
  };

  chart.tickFormat = function(_) {
    if (!arguments.length) return tickFormat;
    tickFormat = _;
    return chart;
  };

  chart.color = function(_) {
    if (!arguments.length) return color;
    color = nv.utils.getColor(_);
    return chart;
  };

  //============================================================


  return chart;
};



// Chart design based on the recommendations of Stephen Few. Implementation
// based on the work of Clint Ivy, Jamie Love, and Jason Davies.
// http://projects.instantcognition.com/protovis/bulletchart/
nv.models.bulletChart = function() {

  //============================================================
  // Public Variables with Default Settings
  //------------------------------------------------------------

  var bullet = nv.models.bullet()
    ;

  var orient = 'left' // TODO top & bottom
    , reverse = false
    , margin = {top: 5, right: 40, bottom: 20, left: 120}
    , ranges = function(d) { return d.ranges }
    , markers = function(d) { return d.markers }
    , measures = function(d) { return d.measures }
    , width = null
    , height = 55
    , tickFormat = null
    , tooltips = true
    , tooltip = function(key, x, y, e, graph) {
        return '<h3>' + x + '</h3>' +
               '<p>' + y + '</p>'
      }
    , noData = 'No Data Available.'
    , dispatch = d3.dispatch('tooltipShow', 'tooltipHide')
    ;

  //============================================================


  //============================================================
  // Private Variables
  //------------------------------------------------------------

  var showTooltip = function(e, offsetElement) {
    var left = e.pos[0] + ( offsetElement.offsetLeft || 0 ) + margin.left,
        top = e.pos[1] + ( offsetElement.offsetTop || 0) + margin.top,
        content = tooltip(e.key, e.label, e.value, e, chart);

    nv.tooltip.show([left, top], content, e.value < 0 ? 'e' : 'w', null, offsetElement);
  };

  //============================================================


  function chart(selection) {
    selection.each(function(d, i) {
      var container = d3.select(this);

      var availableWidth = (width  || parseInt(container.style('width')) || 960)
                             - margin.left - margin.right,
          availableHeight = height - margin.top - margin.bottom,
          that = this;


      chart.update = function() { chart(selection) };
      chart.container = this;

      //------------------------------------------------------------
      // Display No Data message if there's nothing to show.

      if (!d || !ranges.call(this, d, i)) {
        var noDataText = container.selectAll('.nv-noData').data([noData]);

        noDataText.enter().append('text')
          .attr('class', 'nvd3 nv-noData')
          .attr('dy', '-.7em')
          .style('text-anchor', 'middle');

        noDataText
          .attr('x', margin.left + availableWidth / 2)
          .attr('y', 18 + margin.top + availableHeight / 2)
          .text(function(d) { return d });

        return chart;
      } else {
        container.selectAll('.nv-noData').remove();
      }

      //------------------------------------------------------------



      var rangez = ranges.call(this, d, i).slice().sort(d3.descending),
          markerz = markers.call(this, d, i).slice().sort(d3.descending),
          measurez = measures.call(this, d, i).slice().sort(d3.descending);


      //------------------------------------------------------------
      // Setup containers and skeleton of chart

      var wrap = container.selectAll('g.nv-wrap.nv-bulletChart').data([d]);
      var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-bulletChart');
      var gEnter = wrapEnter.append('g');
      var g = wrap.select('g');

      gEnter.append('g').attr('class', 'nv-bulletWrap');
      gEnter.append('g').attr('class', 'nv-titles');

      wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');

      //------------------------------------------------------------


      // Compute the new x-scale.
      var x1 = d3.scale.linear()
          .domain([0, Math.max(rangez[0], markerz[0], measurez[0])])  // TODO: need to allow forceX and forceY, and xDomain, yDomain
          .range(reverse ? [availableWidth, 0] : [0, availableWidth]);

      // Retrieve the old x-scale, if this is an update.
      var x0 = this.__chart__ || d3.scale.linear()
          .domain([0, Infinity])
          .range(x1.range());

      // Stash the new scale.
      this.__chart__ = x1;

      /*
      // Derive width-scales from the x-scales.
      var w0 = bulletWidth(x0),
          w1 = bulletWidth(x1);

      function bulletWidth(x) {
        var x0 = x(0);
        return function(d) {
          return Math.abs(x(d) - x(0));
        };
      }

      function bulletTranslate(x) {
        return function(d) {
          return 'translate(' + x(d) + ',0)';
        };
      }
      */

      var w0 = function(d) { return Math.abs(x0(d) - x0(0)) }, // TODO: could optimize by precalculating x0(0) and x1(0)
          w1 = function(d) { return Math.abs(x1(d) - x1(0)) };


      var title = gEnter.select('.nv-titles').append('g')
          .attr('text-anchor', 'end')
          .attr('transform', 'translate(-6,' + (height - margin.top - margin.bottom) / 2 + ')');
      title.append('text')
          .attr('class', 'nv-title')
          .text(function(d) { return d.title; });

      title.append('text')
          .attr('class', 'nv-subtitle')
          .attr('dy', '1em')
          .text(function(d) { return d.subtitle; });



      bullet
        .width(availableWidth)
        .height(availableHeight)

      var bulletWrap = g.select('.nv-bulletWrap');

      d3.transition(bulletWrap).call(bullet);



      // Compute the tick format.
      var format = tickFormat || x1.tickFormat( availableWidth / 100 );

      // Update the tick groups.
      var tick = g.selectAll('g.nv-tick')
          .data(x1.ticks( availableWidth / 50 ), function(d) {
            return this.textContent || format(d);
          });

      // Initialize the ticks with the old scale, x0.
      var tickEnter = tick.enter().append('g')
          .attr('class', 'nv-tick')
          .attr('transform', function(d) { return 'translate(' + x0(d) + ',0)' })
          .style('opacity', 1e-6);

      tickEnter.append('line')
          .attr('y1', availableHeight)
          .attr('y2', availableHeight * 7 / 6);

      tickEnter.append('text')
          .attr('text-anchor', 'middle')
          .attr('dy', '1em')
          .attr('y', availableHeight * 7 / 6)
          .text(format);


      // Transition the updating ticks to the new scale, x1.
      var tickUpdate = d3.transition(tick)
          .attr('transform', function(d) { return 'translate(' + x1(d) + ',0)' })
          .style('opacity', 1);

      tickUpdate.select('line')
          .attr('y1', availableHeight)
          .attr('y2', availableHeight * 7 / 6);

      tickUpdate.select('text')
          .attr('y', availableHeight * 7 / 6);

      // Transition the exiting ticks to the new scale, x1.
      d3.transition(tick.exit())
          .attr('transform', function(d) { return 'translate(' + x1(d) + ',0)' })
          .style('opacity', 1e-6)
          .remove();


      //============================================================
      // Event Handling/Dispatching (in chart's scope)
      //------------------------------------------------------------

      dispatch.on('tooltipShow', function(e) {
        e.key = data[0].title;
        if (tooltips) showTooltip(e, that.parentNode);
      });

      //============================================================

    });

    d3.timer.flush();

    return chart;
  }


  //============================================================
  // Event Handling/Dispatching (out of chart's scope)
  //------------------------------------------------------------

  bullet.dispatch.on('elementMouseover.tooltip', function(e) {
    dispatch.tooltipShow(e);
  });

  bullet.dispatch.on('elementMouseout.tooltip', function(e) {
    dispatch.tooltipHide(e);
  });

  dispatch.on('tooltipHide', function() {
    if (tooltips) nv.tooltip.cleanup();
  });

  //============================================================


  //============================================================
  // Expose Public Variables
  //------------------------------------------------------------

  chart.dispatch = dispatch;
  chart.bullet = bullet;

  d3.rebind(chart, bullet, 'color');

  // left, right, top, bottom
  chart.orient = function(x) {
    if (!arguments.length) return orient;
    orient = x;
    reverse = orient == 'right' || orient == 'bottom';
    return chart;
  };

  // ranges (bad, satisfactory, good)
  chart.ranges = function(x) {
    if (!arguments.length) return ranges;
    ranges = x;
    return chart;
  };

  // markers (previous, goal)
  chart.markers = function(x) {
    if (!arguments.length) return markers;
    markers = x;
    return chart;
  };

  // measures (actual, forecast)
  chart.measures = function(x) {
    if (!arguments.length) return measures;
    measures = x;
    return chart;
  };

  chart.width = function(x) {
    if (!arguments.length) return width;
    width = x;
    return chart;
  };

  chart.height = function(x) {
    if (!arguments.length) return height;
    height = x;
    return chart;
  };

  chart.margin = function(_) {
    if (!arguments.length) return margin;
    margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
    margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
    margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
    margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
    return chart;
  };

  chart.tickFormat = function(x) {
    if (!arguments.length) return tickFormat;
    tickFormat = x;
    return chart;
  };

  chart.tooltips = function(_) {
    if (!arguments.length) return tooltips;
    tooltips = _;
    return chart;
  };

  chart.tooltipContent = function(_) {
    if (!arguments.length) return tooltip;
    tooltip = _;
    return chart;
  };

  chart.noData = function(_) {
    if (!arguments.length) return noData;
    noData = _;
    return chart;
  };

  //============================================================


  return chart;
};



nv.models.cumulativeLineChart = function() {

  //============================================================
  // Public Variables with Default Settings
  //------------------------------------------------------------

  var lines = nv.models.line()
    , xAxis = nv.models.axis()
    , yAxis = nv.models.axis()
    , legend = nv.models.legend()
    , controls = nv.models.legend()
    ;

  var margin = {top: 30, right: 30, bottom: 50, left: 60}
    , color = nv.utils.defaultColor()
    , width = null
    , height = null
    , showLegend = true
    , tooltips = true
    , showControls = true
    , rescaleY = true
    , tooltip = function(key, x, y, e, graph) {
        return '<h3>' + key + '</h3>' +
               '<p>' +  y + ' at ' + x + '</p>'
      }
    , x //can be accessed via chart.xScale()
    , y //can be accessed via chart.yScale()
    , id = lines.id()
    , state = { index: 0, rescaleY: rescaleY }
    , defaultState = null
    , noData = 'No Data Available.'
    , dispatch = d3.dispatch('tooltipShow', 'tooltipHide', 'stateChange', 'changeState')
    ;

  xAxis
    .orient('bottom')
    .tickPadding(7)
    ;
  yAxis
    .orient('left')
    ;

  //============================================================


  //============================================================
  // Private Variables
  //------------------------------------------------------------

   var dx = d3.scale.linear()
     , index = {i: 0, x: 0}
     ;

  var showTooltip = function(e, offsetElement) {
    var left = e.pos[0] + ( offsetElement.offsetLeft || 0 ),
        top = e.pos[1] + ( offsetElement.offsetTop || 0),
        x = xAxis.tickFormat()(lines.x()(e.point, e.pointIndex)),
        y = yAxis.tickFormat()(lines.y()(e.point, e.pointIndex)),
        content = tooltip(e.series.key, x, y, e, chart);

    nv.tooltip.show([left, top], content, null, null, offsetElement);
  };

/*
  //Moved to see if we can get better behavior to fix issue #315
  var indexDrag = d3.behavior.drag()
                    .on('dragstart', dragStart)
                    .on('drag', dragMove)
                    .on('dragend', dragEnd);

  function dragStart(d,i) {
    d3.select(chart.container)
        .style('cursor', 'ew-resize');
  }

  function dragMove(d,i) {
    d.x += d3.event.dx;
    d.i = Math.round(dx.invert(d.x));

    d3.select(this).attr('transform', 'translate(' + dx(d.i) + ',0)');
    chart.update();
  }

  function dragEnd(d,i) {
    d3.select(chart.container)
        .style('cursor', 'auto');
    chart.update();
  }
*/

  //============================================================


  function chart(selection) {
    selection.each(function(data) {
      var container = d3.select(this).classed('nv-chart-' + id, true),
          that = this;

      var availableWidth = (width  || parseInt(container.style('width')) || 960)
                             - margin.left - margin.right,
          availableHeight = (height || parseInt(container.style('height')) || 400)
                             - margin.top - margin.bottom;


      chart.update = function() { chart(selection) };
      chart.container = this;

      //set state.disabled
      state.disabled = data.map(function(d) { return !!d.disabled });

      if (!defaultState) {
        var key;
        defaultState = {};
        for (key in state) {
          if (state[key] instanceof Array)
            defaultState[key] = state[key].slice(0);
          else
            defaultState[key] = state[key];
        }
      }

      var indexDrag = d3.behavior.drag()
                        .on('dragstart', dragStart)
                        .on('drag', dragMove)
                        .on('dragend', dragEnd);


      function dragStart(d,i) {
        d3.select(chart.container)
            .style('cursor', 'ew-resize');
      }

      function dragMove(d,i) {
        index.x = d3.event.x;
        index.i = Math.round(dx.invert(index.x));
        updateZero();
      }

      function dragEnd(d,i) {
        d3.select(chart.container)
            .style('cursor', 'auto');

        // update state and send stateChange with new index
        state.index = index.i;
        dispatch.stateChange(state);
      }




      //------------------------------------------------------------
      // Display No Data message if there's nothing to show.

      if (!data || !data.length || !data.filter(function(d) { return d.values.length }).length) {
        var noDataText = container.selectAll('.nv-noData').data([noData]);

        noDataText.enter().append('text')
          .attr('class', 'nvd3 nv-noData')
          .attr('dy', '-.7em')
          .style('text-anchor', 'middle');

        noDataText
          .attr('x', margin.left + availableWidth / 2)
          .attr('y', margin.top + availableHeight / 2)
          .text(function(d) { return d });

        return chart;
      } else {
        container.selectAll('.nv-noData').remove();
      }

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup Scales

      x = lines.xScale();
      y = lines.yScale();


      if (!rescaleY) {
        var seriesDomains = data
          .filter(function(series) { return !series.disabled })
          .map(function(series,i) {
            var initialDomain = d3.extent(series.values, lines.y());

            //account for series being disabled when losing 95% or more
            if (initialDomain[0] < -.95) initialDomain[0] = -.95;

            return [
              (initialDomain[0] - initialDomain[1]) / (1 + initialDomain[1]),
              (initialDomain[1] - initialDomain[0]) / (1 + initialDomain[0])
            ];
          });

        var completeDomain = [
          d3.min(seriesDomains, function(d) { return d[0] }),
          d3.max(seriesDomains, function(d) { return d[1] })
        ]

        lines.yDomain(completeDomain);
      } else {
        lines.yDomain(null);
      }


      dx  .domain([0, data[0].values.length - 1]) //Assumes all series have same length
          .range([0, availableWidth])
          .clamp(true);

      //------------------------------------------------------------


      var data = indexify(index.i, data);


      //------------------------------------------------------------
      // Setup containers and skeleton of chart

      var wrap = container.selectAll('g.nv-wrap.nv-cumulativeLine').data([data]);
      var gEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-cumulativeLine').append('g');
      var g = wrap.select('g');

      gEnter.append('g').attr('class', 'nv-x nv-axis');
      gEnter.append('g').attr('class', 'nv-y nv-axis');
      gEnter.append('g').attr('class', 'nv-background');
      gEnter.append('g').attr('class', 'nv-linesWrap');
      gEnter.append('g').attr('class', 'nv-legendWrap');
      gEnter.append('g').attr('class', 'nv-controlsWrap');

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Legend

      if (showLegend) {
        legend.width(availableWidth);

        g.select('.nv-legendWrap')
            .datum(data)
            .call(legend);

        if ( margin.top != legend.height()) {
          margin.top = legend.height();
          availableHeight = (height || parseInt(container.style('height')) || 400)
                             - margin.top - margin.bottom;
        }

        g.select('.nv-legendWrap')
            .attr('transform', 'translate(0,' + (-margin.top) +')')
      }

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Controls

      if (showControls) {
        var controlsData = [
          { key: 'Re-scale y-axis', disabled: !rescaleY }
        ];

        controls.width(140).color(['#444', '#444', '#444']);
        g.select('.nv-controlsWrap')
            .datum(controlsData)
            .attr('transform', 'translate(0,' + (-margin.top) +')')
            .call(controls);
      }

      //------------------------------------------------------------


      wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');


      // Show error if series goes below 100%
      var tempDisabled = data.filter(function(d) { return d.tempDisabled });

      wrap.select('.tempDisabled').remove(); //clean-up and prevent duplicates
      if (tempDisabled.length) {
        wrap.append('text').attr('class', 'tempDisabled')
            .attr('x', availableWidth / 2)
            .attr('y', '-.71em')
            .style('text-anchor', 'end')
            .text(tempDisabled.map(function(d) { return d.key }).join(', ') + ' values cannot be calculated for this time period.');
      }



      //------------------------------------------------------------
      // Main Chart Component(s)

      gEnter.select('.nv-background')
        .append('rect');

      g.select('.nv-background rect')
          .attr('width', availableWidth)
          .attr('height', availableHeight);

      lines
        //.x(function(d) { return d.x })
        .y(function(d) { return d.display.y })
        .width(availableWidth)
        .height(availableHeight)
        .color(data.map(function(d,i) {
          return d.color || color(d, i);
        }).filter(function(d,i) { return !data[i].disabled && !data[i].tempDisabled }));



      var linesWrap = g.select('.nv-linesWrap')
          .datum(data.filter(function(d) { return !d.disabled && !d.tempDisabled }));

      //d3.transition(linesWrap).call(lines);
      linesWrap.call(lines);


      var indexLine = linesWrap.selectAll('.nv-indexLine')
          .data([index]);
      indexLine.enter().append('rect').attr('class', 'nv-indexLine')
          .attr('width', 3)
          .attr('x', -2)
          .attr('fill', 'red')
          .attr('fill-opacity', .5)
          .call(indexDrag)

      indexLine
          .attr('transform', function(d) { return 'translate(' + dx(d.i) + ',0)' })
          .attr('height', availableHeight)

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup Axes

      xAxis
        .scale(x)
        //Suggest how many ticks based on the chart width and D3 should listen (70 is the optimal number for MM/DD/YY dates)
        .ticks( Math.min(data[0].values.length,availableWidth/70) )
        .tickSize(-availableHeight, 0);

      g.select('.nv-x.nv-axis')
          .attr('transform', 'translate(0,' + y.range()[0] + ')');
      d3.transition(g.select('.nv-x.nv-axis'))
          .call(xAxis);


      yAxis
        .scale(y)
        .ticks( availableHeight / 36 )
        .tickSize( -availableWidth, 0);

      d3.transition(g.select('.nv-y.nv-axis'))
          .call(yAxis);

      //------------------------------------------------------------


      //============================================================
      // Event Handling/Dispatching (in chart's scope)
      //------------------------------------------------------------


      function updateZero() {
        indexLine
          .data([index]);

        chart.update();
      }

      g.select('.nv-background rect')
          .on('click', function() {
            index.x = d3.mouse(this)[0];
            index.i = Math.round(dx.invert(index.x));

            // update state and send stateChange with new index
            state.index = index.i;
            dispatch.stateChange(state);

            updateZero();
          });

      lines.dispatch.on('elementClick', function(e) {
        index.i = e.pointIndex;
        index.x = dx(index.i);

        // update state and send stateChange with new index
        state.index = index.i;
        dispatch.stateChange(state);

        updateZero();
      });

      controls.dispatch.on('legendClick', function(d,i) { 
        d.disabled = !d.disabled;
        rescaleY = !d.disabled;

        state.rescaleY = rescaleY;
        dispatch.stateChange(state);

        //selection.transition().call(chart);
        selection.call(chart);
      });


      legend.dispatch.on('legendClick', function(d,i) { 
        d.disabled = !d.disabled;

        if (!data.filter(function(d) { return !d.disabled }).length) {
          data.map(function(d) {
            d.disabled = false;
            wrap.selectAll('.nv-series').classed('disabled', false);
            return d;
          });
        }

        state.disabled = data.map(function(d) { return !!d.disabled });
        dispatch.stateChange(state);

        //selection.transition().call(chart);
        selection.call(chart);
      });

/*
      //
      legend.dispatch.on('legendMouseover', function(d, i) {
        d.hover = true;
        selection.transition().call(chart)
      });

      legend.dispatch.on('legendMouseout', function(d, i) {
        d.hover = false;
        selection.transition().call(chart)
      });
*/

      dispatch.on('tooltipShow', function(e) {
        if (tooltips) showTooltip(e, that.parentNode);
      });


      // Update chart from a state object passed to event handler
      dispatch.on('changeState', function(e) {

        if (typeof e.disabled !== 'undefined') {
          data.forEach(function(series,i) {
            series.disabled = e.disabled[i];
          });

          state.disabled = e.disabled;
        }


        if (typeof e.index !== 'undefined') {
          index.i = e.index;
          index.x = dx(index.i);

          state.index = e.index;

          indexLine
            .data([index]);
        }


        if (typeof e.rescaleY !== 'undefined') {
          rescaleY = e.rescaleY;
        }

        selection.call(chart);
      });

      //============================================================

    });

    return chart;
  }


  //============================================================
  // Event Handling/Dispatching (out of chart's scope)
  //------------------------------------------------------------

  lines.dispatch.on('elementMouseover.tooltip', function(e) {
    e.pos = [e.pos[0] +  margin.left, e.pos[1] + margin.top];
    dispatch.tooltipShow(e);
  });

  lines.dispatch.on('elementMouseout.tooltip', function(e) {
    dispatch.tooltipHide(e);
  });

  dispatch.on('tooltipHide', function() {
    if (tooltips) nv.tooltip.cleanup();
  });

  //============================================================


  //============================================================
  // Expose Public Variables
  //------------------------------------------------------------

  // expose chart's sub-components
  chart.dispatch = dispatch;
  chart.lines = lines;
  chart.legend = legend;
  chart.xAxis = xAxis;
  chart.yAxis = yAxis;

  d3.rebind(chart, lines, 'defined', 'isArea', 'x', 'y', 'size', 'xDomain', 'yDomain', 'forceX', 'forceY', 'interactive', 'clipEdge', 'clipVoronoi', 'id');

  chart.margin = function(_) {
    if (!arguments.length) return margin;
    margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
    margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
    margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
    margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
    return chart;
  };

  chart.width = function(_) {
    if (!arguments.length) return width;
    width = _;
    return chart;
  };

  chart.height = function(_) {
    if (!arguments.length) return height;
    height = _;
    return chart;
  };

  chart.color = function(_) {
    if (!arguments.length) return color;
    color = nv.utils.getColor(_);
    legend.color(color);
    return chart;
  };

  chart.rescaleY = function(_) {
    if (!arguments.length) return rescaleY;
    rescaleY = _
    return rescaleY;
  };

  chart.showControls = function(_) {
    if (!arguments.length) return showControls;
    showControls = _;
    return chart;
  };

  chart.showLegend = function(_) {
    if (!arguments.length) return showLegend;
    showLegend = _;
    return chart;
  };

  chart.tooltips = function(_) {
    if (!arguments.length) return tooltips;
    tooltips = _;
    return chart;
  };

  chart.tooltipContent = function(_) {
    if (!arguments.length) return tooltip;
    tooltip = _;
    return chart;
  };

  chart.state = function(_) {
    if (!arguments.length) return state;
    state = _;
    return chart;
  };

  chart.defaultState = function(_) {
    if (!arguments.length) return defaultState;
    defaultState = _;
    return chart;
  };

  chart.noData = function(_) {
    if (!arguments.length) return noData;
    noData = _;
    return chart;
  };

  //============================================================


  //============================================================
  // Functions
  //------------------------------------------------------------

  /* Normalize the data according to an index point. */
  function indexify(idx, data) {
    return data.map(function(line, i) {
      var v = lines.y()(line.values[idx], idx);

      //TODO: implement check below, and disable series if series loses 100% or more cause divide by 0 issue
      if (v < -.95) {
        //if a series loses more than 100%, calculations fail.. anything close can cause major distortion (but is mathematically correct till it hits 100)
        line.tempDisabled = true;
        return line;
      }

      line.tempDisabled = false;

      line.values = line.values.map(function(point, pointIndex) {
        point.display = {'y': (lines.y()(point, pointIndex) - v) / (1 + v) };
        return point;
      })

      return line;
    })
  }

  //============================================================


  return chart;
}
//TODO: consider deprecating by adding necessary features to multiBar model
nv.models.discreteBar = function() {

  //============================================================
  // Public Variables with Default Settings
  //------------------------------------------------------------

  var margin = {top: 0, right: 0, bottom: 0, left: 0}
    , width = 960
    , height = 500
    , id = Math.floor(Math.random() * 10000) //Create semi-unique ID in case user doesn't select one
    , x = d3.scale.ordinal()
    , y = d3.scale.linear()
    , getX = function(d) { return d.x }
    , getY = function(d) { return d.y }
    , forceY = [0] // 0 is forced by default.. this makes sense for the majority of bar graphs... user can always do chart.forceY([]) to remove
    , color = nv.utils.defaultColor()
    , showValues = false
    , valueFormat = d3.format(',.2f')
    , xDomain
    , yDomain
    , dispatch = d3.dispatch('chartClick', 'elementClick', 'elementDblClick', 'elementMouseover', 'elementMouseout')
    , rectClass = 'discreteBar'
    ;

  //============================================================


  //============================================================
  // Private Variables
  //------------------------------------------------------------

  var x0, y0;

  //============================================================


  function chart(selection) {
    selection.each(function(data) {
      var availableWidth = width - margin.left - margin.right,
          availableHeight = height - margin.top - margin.bottom,
          container = d3.select(this);


      //add series index to each data point for reference
      data = data.map(function(series, i) {
        series.values = series.values.map(function(point) {
          point.series = i;
          return point;
        });
        return series;
      });


      //------------------------------------------------------------
      // Setup Scales

      // remap and flatten the data for use in calculating the scales' domains
      var seriesData = (xDomain && yDomain) ? [] : // if we know xDomain and yDomain, no need to calculate
            data.map(function(d) {
              return d.values.map(function(d,i) {
                return { x: getX(d,i), y: getY(d,i), y0: d.y0 }
              })
            });

      x   .domain(xDomain || d3.merge(seriesData).map(function(d) { return d.x }))
          .rangeBands([0, availableWidth], .1);

      y   .domain(yDomain || d3.extent(d3.merge(seriesData).map(function(d) { return d.y }).concat(forceY)));


      // If showValues, pad the Y axis range to account for label height
      if (showValues) y.range([availableHeight - (y.domain()[0] < 0 ? 12 : 0), y.domain()[1] > 0 ? 12 : 0]);
      else y.range([availableHeight, 0]);

      //store old scales if they exist
      x0 = x0 || x;
      y0 = y0 || y.copy().range([y(0),y(0)]);

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup containers and skeleton of chart

      var wrap = container.selectAll('g.nv-wrap.nv-discretebar').data([data]);
      var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-discretebar');
      var gEnter = wrapEnter.append('g');
      var g = wrap.select('g');

      gEnter.append('g').attr('class', 'nv-groups');

      wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');

      //------------------------------------------------------------



      //TODO: by definition, the discrete bar should not have multiple groups, will modify/remove later
      var groups = wrap.select('.nv-groups').selectAll('.nv-group')
          .data(function(d) { return d }, function(d) { return d.key });
      groups.enter().append('g')
          .style('stroke-opacity', 1e-6)
          .style('fill-opacity', 1e-6);
      d3.transition(groups.exit())
          .style('stroke-opacity', 1e-6)
          .style('fill-opacity', 1e-6)
          .remove();
      groups
          .attr('class', function(d,i) { return 'nv-group nv-series-' + i })
          .classed('hover', function(d) { return d.hover });
      d3.transition(groups)
          .style('stroke-opacity', 1)
          .style('fill-opacity', .75);


      var bars = groups.selectAll('g.nv-bar')
          .data(function(d) { return d.values });

      bars.exit().remove();


      var barsEnter = bars.enter().append('g')
          .attr('transform', function(d,i,j) {
              return 'translate(' + (x(getX(d,i)) + x.rangeBand() * .05 ) + ', ' + y(0) + ')' 
          })
          .on('mouseover', function(d,i) { //TODO: figure out why j works above, but not here
            d3.select(this).classed('hover', true);
            dispatch.elementMouseover({
              value: getY(d,i),
              point: d,
              series: data[d.series],
              pos: [x(getX(d,i)) + (x.rangeBand() * (d.series + .5) / data.length), y(getY(d,i))],  // TODO: Figure out why the value appears to be shifted
              pointIndex: i,
              seriesIndex: d.series,
              e: d3.event
            });
          })
          .on('mouseout', function(d,i) {
            d3.select(this).classed('hover', false);
            dispatch.elementMouseout({
              value: getY(d,i),
              point: d,
              series: data[d.series],
              pointIndex: i,
              seriesIndex: d.series,
              e: d3.event
            });
          })
          .on('click', function(d,i) {
            dispatch.elementClick({
              value: getY(d,i),
              point: d,
              series: data[d.series],
              pos: [x(getX(d,i)) + (x.rangeBand() * (d.series + .5) / data.length), y(getY(d,i))],  // TODO: Figure out why the value appears to be shifted
              pointIndex: i,
              seriesIndex: d.series,
              e: d3.event
            });
            d3.event.stopPropagation();
          })
          .on('dblclick', function(d,i) {
            dispatch.elementDblClick({
              value: getY(d,i),
              point: d,
              series: data[d.series],
              pos: [x(getX(d,i)) + (x.rangeBand() * (d.series + .5) / data.length), y(getY(d,i))],  // TODO: Figure out why the value appears to be shifted
              pointIndex: i,
              seriesIndex: d.series,
              e: d3.event
            });
            d3.event.stopPropagation();
          });

      barsEnter.append('rect')
          .attr('height', 0)
          .attr('width', x.rangeBand() * .9 / data.length )

      if (showValues) {
        barsEnter.append('text')
          .attr('text-anchor', 'middle')
        bars.select('text')
          .attr('x', x.rangeBand() * .9 / 2)
          .attr('y', function(d,i) { return getY(d,i) < 0 ? y(getY(d,i)) - y(0) + 12 : -4 })
          .text(function(d,i) { return valueFormat(getY(d,i)) });
      } else {
        bars.selectAll('text').remove();
      }

      bars
          .attr('class', function(d,i) { return getY(d,i) < 0 ? 'nv-bar negative' : 'nv-bar positive' })
          .style('fill', function(d,i) { return d.color || color(d,i) })
          .style('stroke', function(d,i) { return d.color || color(d,i) })
        .select('rect')
          .attr('class', rectClass)
          .attr('width', x.rangeBand() * .9 / data.length);
      d3.transition(bars)
        //.delay(function(d,i) { return i * 1200 / data[0].values.length })
          .attr('transform', function(d,i) {
            var left = x(getX(d,i)) + x.rangeBand() * .05,
                top = getY(d,i) < 0 ?
                        y(0) :
                        y(0) - y(getY(d,i)) < 1 ?
                          y(0) - 1 : //make 1 px positive bars show up above y=0
                          y(getY(d,i));

              return 'translate(' + left + ', ' + top + ')'
          })
        .select('rect')
          .attr('height', function(d,i) {
            return  Math.max(Math.abs(y(getY(d,i)) - y(0)) || 1)
          });


      //store old scales for use in transitions on update
      x0 = x.copy();
      y0 = y.copy();

    });

    return chart;
  }


  //============================================================
  // Expose Public Variables
  //------------------------------------------------------------

  chart.dispatch = dispatch;

  chart.x = function(_) {
    if (!arguments.length) return getX;
    getX = _;
    return chart;
  };

  chart.y = function(_) {
    if (!arguments.length) return getY;
    getY = _;
    return chart;
  };

  chart.margin = function(_) {
    if (!arguments.length) return margin;
    margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
    margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
    margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
    margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
    return chart;
  };

  chart.width = function(_) {
    if (!arguments.length) return width;
    width = _;
    return chart;
  };

  chart.height = function(_) {
    if (!arguments.length) return height;
    height = _;
    return chart;
  };

  chart.xScale = function(_) {
    if (!arguments.length) return x;
    x = _;
    return chart;
  };

  chart.yScale = function(_) {
    if (!arguments.length) return y;
    y = _;
    return chart;
  };

  chart.xDomain = function(_) {
    if (!arguments.length) return xDomain;
    xDomain = _;
    return chart;
  };

  chart.yDomain = function(_) {
    if (!arguments.length) return yDomain;
    yDomain = _;
    return chart;
  };

  chart.forceY = function(_) {
    if (!arguments.length) return forceY;
    forceY = _;
    return chart;
  };

  chart.color = function(_) {
    if (!arguments.length) return color;
    color = nv.utils.getColor(_);
    return chart;
  };

  chart.id = function(_) {
    if (!arguments.length) return id;
    id = _;
    return chart;
  };

  chart.showValues = function(_) {
    if (!arguments.length) return showValues;
    showValues = _;
    return chart;
  };

  chart.valueFormat= function(_) {
    if (!arguments.length) return valueFormat;
    valueFormat = _;
    return chart;
  };

  chart.rectClass= function(_) {
    if (!arguments.length) return rectClass;
    rectClass = _;
    return chart;
  }
  //============================================================


  return chart;
}

nv.models.discreteBarChart = function() {

  //============================================================
  // Public Variables with Default Settings
  //------------------------------------------------------------

  var discretebar = nv.models.discreteBar()
    , xAxis = nv.models.axis()
    , yAxis = nv.models.axis()
    ;

  var margin = {top: 15, right: 10, bottom: 50, left: 60}
    , width = null
    , height = null
    , color = nv.utils.getColor()
    , staggerLabels = false
    , tooltips = true
    , tooltip = function(key, x, y, e, graph) {
        return '<h3>' + x + '</h3>' +
               '<p>' +  y + '</p>'
      }
    , x
    , y
    , noData = "No Data Available."
    , dispatch = d3.dispatch('tooltipShow', 'tooltipHide', 'beforeUpdate')
    ;

  xAxis
    .orient('bottom')
    .highlightZero(false)
    .showMaxMin(false)
    .tickFormat(function(d) { return d })
    ;
  yAxis
    .orient('left')
    .tickFormat(d3.format(',.1f'))
    ;

  //============================================================


  //============================================================
  // Private Variables
  //------------------------------------------------------------

  var showTooltip = function(e, offsetElement) {
    var left = e.pos[0] + ( offsetElement.offsetLeft || 0 ),
        top = e.pos[1] + ( offsetElement.offsetTop || 0),
        x = xAxis.tickFormat()(discretebar.x()(e.point, e.pointIndex)),
        y = yAxis.tickFormat()(discretebar.y()(e.point, e.pointIndex)),
        content = tooltip(e.series.key, x, y, e, chart);

    nv.tooltip.show([left, top], content, e.value < 0 ? 'n' : 's', null, offsetElement);
  };

  //============================================================


  function chart(selection) {
    selection.each(function(data) {
      var container = d3.select(this),
          that = this;

      var availableWidth = (width  || parseInt(container.style('width')) || 960)
                             - margin.left - margin.right,
          availableHeight = (height || parseInt(container.style('height')) || 400)
                             - margin.top - margin.bottom;


      chart.update = function() { dispatch.beforeUpdate(); selection.transition().call(chart); };
      chart.container = this;


      //------------------------------------------------------------
      // Display No Data message if there's nothing to show.

      if (!data || !data.length || !data.filter(function(d) { return d.values.length }).length) {
        var noDataText = container.selectAll('.nv-noData').data([noData]);

        noDataText.enter().append('text')
          .attr('class', 'nvd3 nv-noData')
          .attr('dy', '-.7em')
          .style('text-anchor', 'middle');

        noDataText
          .attr('x', margin.left + availableWidth / 2)
          .attr('y', margin.top + availableHeight / 2)
          .text(function(d) { return d });

        return chart;
      } else {
        container.selectAll('.nv-noData').remove();
      }

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup Scales

      x = discretebar.xScale();
      y = discretebar.yScale();

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup containers and skeleton of chart

      var wrap = container.selectAll('g.nv-wrap.nv-discreteBarWithAxes').data([data]);
      var gEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-discreteBarWithAxes').append('g');
      var defsEnter = gEnter.append('defs');
      var g = wrap.select('g');

      gEnter.append('g').attr('class', 'nv-x nv-axis');
      gEnter.append('g').attr('class', 'nv-y nv-axis');
      gEnter.append('g').attr('class', 'nv-barsWrap');

      g.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Main Chart Component(s)

      discretebar
        .width(availableWidth)
        .height(availableHeight);


      var barsWrap = g.select('.nv-barsWrap')
          .datum(data.filter(function(d) { return !d.disabled }))

      d3.transition(barsWrap).call(discretebar);

      //------------------------------------------------------------



      defsEnter.append('clipPath')
          .attr('id', 'nv-x-label-clip-' + discretebar.id())
        .append('rect');

      g.select('#nv-x-label-clip-' + discretebar.id() + ' rect')
          .attr('width', x.rangeBand() * (staggerLabels ? 2 : 1))
          .attr('height', 16)
          .attr('x', -x.rangeBand() / (staggerLabels ? 1 : 2 ));


      //------------------------------------------------------------
      // Setup Axes

      xAxis
        .scale(x)
        .ticks( availableWidth / 100 )
        .tickSize(-availableHeight, 0);

      g.select('.nv-x.nv-axis')
          .attr('transform', 'translate(0,' + (y.range()[0] + ((discretebar.showValues() && y.domain()[0] < 0) ? 16 : 0)) + ')');
      //d3.transition(g.select('.nv-x.nv-axis'))
      g.select('.nv-x.nv-axis').transition().duration(0)
          .call(xAxis);


      var xTicks = g.select('.nv-x.nv-axis').selectAll('g');

      if (staggerLabels) {
        xTicks
            .selectAll('text')
            .attr('transform', function(d,i,j) { return 'translate(0,' + (j % 2 == 0 ? '5' : '17') + ')' })
      }

      yAxis
        .scale(y)
        .ticks( availableHeight / 36 )
        .tickSize( -availableWidth, 0);

      d3.transition(g.select('.nv-y.nv-axis'))
          .call(yAxis);

      //------------------------------------------------------------


      //============================================================
      // Event Handling/Dispatching (in chart's scope)
      //------------------------------------------------------------

      dispatch.on('tooltipShow', function(e) {
        if (tooltips) showTooltip(e, that.parentNode);
      });

      //============================================================


    });

    return chart;
  }

  //============================================================
  // Event Handling/Dispatching (out of chart's scope)
  //------------------------------------------------------------

  discretebar.dispatch.on('elementMouseover.tooltip', function(e) {
    e.pos = [e.pos[0] +  margin.left, e.pos[1] + margin.top];
    dispatch.tooltipShow(e);
  });

  discretebar.dispatch.on('elementMouseout.tooltip', function(e) {
    dispatch.tooltipHide(e);
  });

  dispatch.on('tooltipHide', function() {
    if (tooltips) nv.tooltip.cleanup();
  });

  //============================================================


  //============================================================
  // Expose Public Variables
  //------------------------------------------------------------

  // expose chart's sub-components
  chart.dispatch = dispatch;
  chart.discretebar = discretebar;
  chart.xAxis = xAxis;
  chart.yAxis = yAxis;

  d3.rebind(chart, discretebar, 'x', 'y', 'xDomain', 'yDomain', 'forceX', 'forceY', 'id', 'showValues', 'valueFormat');

  chart.margin = function(_) {
    if (!arguments.length) return margin;
    margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
    margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
    margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
    margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
    return chart;
  };

  chart.width = function(_) {
    if (!arguments.length) return width;
    width = _;
    return chart;
  };

  chart.height = function(_) {
    if (!arguments.length) return height;
    height = _;
    return chart;
  };

  chart.color = function(_) {
    if (!arguments.length) return color;
    color = nv.utils.getColor(_);
    discretebar.color(color);
    return chart;
  };

  chart.staggerLabels = function(_) {
    if (!arguments.length) return staggerLabels;
    staggerLabels = _;
    return chart;
  };

  chart.tooltips = function(_) {
    if (!arguments.length) return tooltips;
    tooltips = _;
    return chart;
  };

  chart.tooltipContent = function(_) {
    if (!arguments.length) return tooltip;
    tooltip = _;
    return chart;
  };

  chart.noData = function(_) {
    if (!arguments.length) return noData;
    noData = _;
    return chart;
  };

  //============================================================


  return chart;
}

nv.models.distribution = function() {

  //============================================================
  // Public Variables with Default Settings
  //------------------------------------------------------------

  var margin = {top: 0, right: 0, bottom: 0, left: 0}
    , width = 400 //technically width or height depending on x or y....
    , size = 8
    , axis = 'x' // 'x' or 'y'... horizontal or vertical
    , getData = function(d) { return d[axis] }  // defaults d.x or d.y
    , color = nv.utils.defaultColor()
    , scale = d3.scale.linear()
    , domain
    ;

  //============================================================


  //============================================================
  // Private Variables
  //------------------------------------------------------------

  var scale0;

  //============================================================


  function chart(selection) {
    selection.each(function(data) {
      var availableLength = width - (axis === 'x' ? margin.left + margin.right : margin.top + margin.bottom),
          naxis = axis == 'x' ? 'y' : 'x',
          container = d3.select(this);


      //------------------------------------------------------------
      // Setup Scales

      scale0 = scale0 || scale;

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup containers and skeleton of chart

      var wrap = container.selectAll('g.nv-distribution').data([data]);
      var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-distribution');
      var gEnter = wrapEnter.append('g');
      var g = wrap.select('g');

      wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')')

      //------------------------------------------------------------


      var distWrap = g.selectAll('g.nv-dist')
          .data(function(d) { return d }, function(d) { return d.key });

      distWrap.enter().append('g');
      distWrap
          .attr('class', function(d,i) { return 'nv-dist nv-series-' + i })
          .style('stroke', function(d,i) { return color(d, i) });

      var dist = distWrap.selectAll('line.nv-dist' + axis)
          .data(function(d) { return d.values })
      dist.enter().append('line')
          .attr(axis + '1', function(d,i) { return scale0(getData(d,i)) })
          .attr(axis + '2', function(d,i) { return scale0(getData(d,i)) })
      d3.transition(distWrap.exit().selectAll('line.nv-dist' + axis))
          .attr(axis + '1', function(d,i) { return scale(getData(d,i)) })
          .attr(axis + '2', function(d,i) { return scale(getData(d,i)) })
          .style('stroke-opacity', 0)
          .remove();
      dist
          .attr('class', function(d,i) { return 'nv-dist' + axis + ' nv-dist' + axis + '-' + i })
          .attr(naxis + '1', 0)
          .attr(naxis + '2', size);
      d3.transition(dist)
          .attr(axis + '1', function(d,i) { return scale(getData(d,i)) })
          .attr(axis + '2', function(d,i) { return scale(getData(d,i)) })


      scale0 = scale.copy();

    });

    return chart;
  }


  //============================================================
  // Expose Public Variables
  //------------------------------------------------------------

  chart.margin = function(_) {
    if (!arguments.length) return margin;
    margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
    margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
    margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
    margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
    return chart;
  };

  chart.width = function(_) {
    if (!arguments.length) return width;
    width = _;
    return chart;
  };

  chart.axis = function(_) {
    if (!arguments.length) return axis;
    axis = _;
    return chart;
  };

  chart.size = function(_) {
    if (!arguments.length) return size;
    size = _;
    return chart;
  };

  chart.getData = function(_) {
    if (!arguments.length) return getData;
    getData = d3.functor(_);
    return chart;
  };

  chart.scale = function(_) {
    if (!arguments.length) return scale;
    scale = _;
    return chart;
  };

  chart.color = function(_) {
    if (!arguments.length) return color;
    color = nv.utils.getColor(_);
    return chart;
  };

  //============================================================


  return chart;
}
nv.models.indentedTree = function() {

  //============================================================
  // Public Variables with Default Settings
  //------------------------------------------------------------

  var margin = {top: 0, right: 0, bottom: 0, left: 0} //TODO: implement, maybe as margin on the containing div
    , width = 960
    , height = 500
    , color = nv.utils.defaultColor()
    , id = Math.floor(Math.random() * 10000)
    , header = true
    , filterZero = false
    , noData = "No Data Available."
    , childIndent = 20
    , columns = [{key:'key', label: 'Name', type:'text'}] //TODO: consider functions like chart.addColumn, chart.removeColumn, instead of a block like this
    , tableClass = null
    , iconOpen = 'images/grey-plus.png' //TODO: consider removing this and replacing with a '+' or '-' unless user defines images
    , iconClose = 'images/grey-minus.png'
    , dispatch = d3.dispatch('elementClick', 'elementDblclick', 'elementMouseover', 'elementMouseout')
    ;

  //============================================================

  var idx = 0;

  function chart(selection) {
    selection.each(function(data) {
      var depth = 1,
          container = d3.select(this);

      var tree = d3.layout.tree()
          .children(function(d) { return d.values })
          .size([height, childIndent]); //Not sure if this is needed now that the result is HTML

      chart.update = function() { container.transition().duration(600).call(chart) };


      //------------------------------------------------------------
      // Display No Data message if there's nothing to show.
      if (!data[0]) data[0] = {key: noData};

      //------------------------------------------------------------


      var nodes = tree.nodes(data[0]);

      // nodes.map(function(d) {
      //   d.id = i++;
      // })

      //------------------------------------------------------------
      // Setup containers and skeleton of chart

      var wrap = d3.select(this).selectAll('div').data([[nodes]]);
      var wrapEnter = wrap.enter().append('div').attr('class', 'nvd3 nv-wrap nv-indentedtree');
      var tableEnter = wrapEnter.append('table');
      var table = wrap.select('table').attr('width', '100%').attr('class', tableClass);

      //------------------------------------------------------------


      if (header) {
        var thead = tableEnter.append('thead');

        var theadRow1 = thead.append('tr');

        columns.forEach(function(column) {
          theadRow1
            .append('th')
              .attr('width', column.width ? column.width : '10%')
              .style('text-align', column.type == 'numeric' ? 'right' : 'left')
            .append('span')
              .text(column.label);
        });
      }


      var tbody = table.selectAll('tbody')
                    .data(function(d) { return d });
      tbody.enter().append('tbody');



      //compute max generations
      depth = d3.max(nodes, function(node) { return node.depth });
      tree.size([height, depth * childIndent]); //TODO: see if this is necessary at all


      // Update the nodes…
      var node = tbody.selectAll('tr')
          // .data(function(d) { return d; }, function(d) { return d.id || (d.id == ++i)});
          .data(function(d) { return d.filter(function(d) { return (filterZero && !d.children) ? filterZero(d) :  true; } )}, function(d,i) { return d.id || (d.id || ++idx)});
          //.style('display', 'table-row'); //TODO: see if this does anything

      node.exit().remove();

      node.select('img.nv-treeicon')
          .attr('src', icon)
          .classed('folded', folded);

      var nodeEnter = node.enter().append('tr');


      columns.forEach(function(column, index) {

        var nodeName = nodeEnter.append('td')
            .style('padding-left', function(d) { return (index ? 0 : d.depth * childIndent + 12 + (icon(d) ? 0 : 16)) + 'px' }, 'important') //TODO: check why I did the ternary here
            .style('text-align', column.type == 'numeric' ? 'right' : 'left');


        if (index == 0) {
          nodeName.append('img')
              .classed('nv-treeicon', true)
              .classed('nv-folded', folded)
              .attr('src', icon)
              .style('width', '14px')
              .style('height', '14px')
              .style('padding', '0 1px')
              .style('display', function(d) { return icon(d) ? 'inline-block' : 'none'; })
              .on('click', click);
        }


        nodeName.append('span')
            .attr('class', d3.functor(column.classes) )
            .text(function(d) { return column.format ? column.format(d) :
                                        (d[column.key] || '-') });

        if  (column.showCount) {
          nodeName.append('span')
              .attr('class', 'nv-childrenCount');

          node.selectAll('span.nv-childrenCount').text(function(d) {
                return ((d.values && d.values.length) || (d._values && d._values.length)) ?                                   //If this is a parent
                    '(' + ((d.values && (d.values.filter(function(d) { return filterZero ? filterZero(d) :  true; }).length)) //If children are in values check its children and filter
                    || (d._values && d._values.filter(function(d) { return filterZero ? filterZero(d) :  true; }).length)     //Otherwise, do the same, but with the other name, _values...
                    || 0) + ')'                                                                                               //This is the catch-all in case there are no children after a filter
                    : ''                                                                                                     //If this is not a parent, just give an empty string
            });
        }

        if (column.click)
          nodeName.select('span').on('click', column.click);

      });

      node
        .order()
        .on('click', function(d) { 
          dispatch.elementClick({
            row: this, //TODO: decide whether or not this should be consistent with scatter/line events or should be an html link (a href)
            data: d,
            pos: [d.x, d.y]
          });
        })
        .on('dblclick', function(d) { 
          dispatch.elementDblclick({
            row: this,
            data: d,
            pos: [d.x, d.y]
          });
        })
        .on('mouseover', function(d) { 
          dispatch.elementMouseover({
            row: this,
            data: d,
            pos: [d.x, d.y]
          });
        })
        .on('mouseout', function(d) { 
          dispatch.elementMouseout({
            row: this,
            data: d,
            pos: [d.x, d.y]
          });
        });




      // Toggle children on click.
      function click(d, _, unshift) {
        d3.event.stopPropagation();

        if(d3.event.shiftKey && !unshift) {
          //If you shift-click, it'll toggle fold all the children, instead of itself
          d3.event.shiftKey = false;
          d.values && d.values.forEach(function(node){
            if (node.values || node._values) {
              click(node, 0, true);
            }
          });
          return true;
        }
        if(!hasChildren(d)) {
          //download file
          //window.location.href = d.url;
          return true;
        }
        if (d.values) {
          d._values = d.values;
          d.values = null;
        } else {
          d.values = d._values;
          d._values = null;
        }
        chart.update();
      }


      function icon(d) {
        return (d._values && d._values.length) ? iconOpen : (d.values && d.values.length) ? iconClose : '';
      }

      function folded(d) {
        return (d._values && d._values.length);
      }

      function hasChildren(d) {
        var values = d.values || d._values;

        return (values && values.length);
      }


    });

    return chart;
  }


  //============================================================
  // Expose Public Variables
  //------------------------------------------------------------

  chart.margin = function(_) {
    if (!arguments.length) return margin;
    margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
    margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
    margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
    margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
    return chart;
  };

  chart.width = function(_) {
    if (!arguments.length) return width;
    width = _;
    return chart;
  };

  chart.height = function(_) {
    if (!arguments.length) return height;
    height = _;
    return chart;
  };

  chart.color = function(_) {
    if (!arguments.length) return color;
    color = nv.utils.getColor(_);
    scatter.color(color);
    return chart;
  };

  chart.id = function(_) {
    if (!arguments.length) return id;
    id = _;
    return chart;
  };

  chart.header = function(_) {
    if (!arguments.length) return header;
    header = _;
    return chart;
  };

  chart.noData = function(_) {
    if (!arguments.length) return noData;
    noData = _;
    return chart;
  };

  chart.filterZero = function(_) {
    if (!arguments.length) return filterZero;
    filterZero = _;
    return chart;
  };

  chart.columns = function(_) {
    if (!arguments.length) return columns;
    columns = _;
    return chart;
  };

  chart.tableClass = function(_) {
    if (!arguments.length) return tableClass;
    tableClass = _;
    return chart;
  };

  chart.iconOpen = function(_){
     if (!arguments.length) return iconOpen;
    iconOpen = _;
    return chart;
  }

  chart.iconClose = function(_){
     if (!arguments.length) return iconClose;
    iconClose = _;
    return chart;
  }

  //============================================================


  return chart;
};nv.models.legend = function() {

  //============================================================
  // Public Variables with Default Settings
  //------------------------------------------------------------

  var margin = {top: 5, right: 0, bottom: 5, left: 0}
    , width = 400
    , height = 20
    , getKey = function(d) { return d.key }
    , color = nv.utils.defaultColor()
    , align = true
    , dispatch = d3.dispatch('legendClick', 'legendDblclick', 'legendMouseover', 'legendMouseout')
    ;

  //============================================================


  function chart(selection) {
    selection.each(function(data) {
      var availableWidth = width - margin.left - margin.right,
          container = d3.select(this);


      //------------------------------------------------------------
      // Setup containers and skeleton of chart

      var wrap = container.selectAll('g.nv-legend').data([data]);
      var gEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-legend').append('g');
      var g = wrap.select('g');

      wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');

      //------------------------------------------------------------


      var series = g.selectAll('.nv-series')
          .data(function(d) { return d });
      var seriesEnter = series.enter().append('g').attr('class', 'nv-series')
          .on('mouseover', function(d,i) {
            dispatch.legendMouseover(d,i);  //TODO: Make consistent with other event objects
          })
          .on('mouseout', function(d,i) {
            dispatch.legendMouseout(d,i);
          })
          .on('click', function(d,i) {
            dispatch.legendClick(d,i);
          })
          .on('dblclick', function(d,i) {
            dispatch.legendDblclick(d,i);
          });
      seriesEnter.append('circle')
          .style('stroke-width', 2)
          .attr('r', 5);
      seriesEnter.append('text')
          .attr('text-anchor', 'start')
          .attr('dy', '.32em')
          .attr('dx', '8');
      series.classed('disabled', function(d) { return d.disabled });
      series.exit().remove();
      series.select('circle')
          .style('fill', function(d,i) { return d.color || color(d,i)})
          .style('stroke', function(d,i) { return d.color || color(d, i) });
      series.select('text').text(getKey);


      //TODO: implement fixed-width and max-width options (max-width is especially useful with the align option)

      // NEW ALIGNING CODE, TODO: clean up
      if (align) {
        var seriesWidths = [];
        series.each(function(d,i) {
              seriesWidths.push(d3.select(this).select('text').node().getComputedTextLength() + 28); // 28 is ~ the width of the circle plus some padding
            });

        //nv.log('Series Widths: ', JSON.stringify(seriesWidths));

        var seriesPerRow = 0;
        var legendWidth = 0;
        var columnWidths = [];

        while ( legendWidth < availableWidth && seriesPerRow < seriesWidths.length) {
          columnWidths[seriesPerRow] = seriesWidths[seriesPerRow];
          legendWidth += seriesWidths[seriesPerRow++];
        }


        while ( legendWidth > availableWidth && seriesPerRow > 1 ) {
          columnWidths = [];
          seriesPerRow--;

          for (k = 0; k < seriesWidths.length; k++) {
            if (seriesWidths[k] > (columnWidths[k % seriesPerRow] || 0) )
              columnWidths[k % seriesPerRow] = seriesWidths[k];
          }

          legendWidth = columnWidths.reduce(function(prev, cur, index, array) {
                          return prev + cur;
                        });
        }
        //console.log(columnWidths, legendWidth, seriesPerRow);

        var xPositions = [];
        for (var i = 0, curX = 0; i < seriesPerRow; i++) {
            xPositions[i] = curX;
            curX += columnWidths[i];
        }

        series
            .attr('transform', function(d, i) {
              return 'translate(' + xPositions[i % seriesPerRow] + ',' + (5 + Math.floor(i / seriesPerRow) * 20) + ')';
            });

        //position legend as far right as possible within the total width
        g.attr('transform', 'translate(' + (width - margin.right - legendWidth) + ',' + margin.top + ')');

        height = margin.top + margin.bottom + (Math.ceil(seriesWidths.length / seriesPerRow) * 20);

      } else {

        var ypos = 5,
            newxpos = 5,
            maxwidth = 0,
            xpos;
        series
            .attr('transform', function(d, i) {
              var length = d3.select(this).select('text').node().getComputedTextLength() + 28;
              xpos = newxpos;

              if (width < margin.left + margin.right + xpos + length) {
                newxpos = xpos = 5;
                ypos += 20;
              }

              newxpos += length;
              if (newxpos > maxwidth) maxwidth = newxpos;

              return 'translate(' + xpos + ',' + ypos + ')';
            });

        //position legend as far right as possible within the total width
        g.attr('transform', 'translate(' + (width - margin.right - maxwidth) + ',' + margin.top + ')');

        height = margin.top + margin.bottom + ypos + 15;

      }

    });

    return chart;
  }


  //============================================================
  // Expose Public Variables
  //------------------------------------------------------------

  chart.dispatch = dispatch;

  chart.margin = function(_) {
    if (!arguments.length) return margin;
    margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
    margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
    margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
    margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
    return chart;
  };

  chart.width = function(_) {
    if (!arguments.length) return width;
    width = _;
    return chart;
  };

  chart.height = function(_) {
    if (!arguments.length) return height;
    height = _;
    return chart;
  };

  chart.key = function(_) {
    if (!arguments.length) return getKey;
    getKey = _;
    return chart;
  };

  chart.color = function(_) {
    if (!arguments.length) return color;
    color = nv.utils.getColor(_);
    return chart;
  };

  chart.align = function(_) {
    if (!arguments.length) return align;
    align = _;
    return chart;
  };

  //============================================================


  return chart;
}

nv.models.line = function() {

  //============================================================
  // Public Variables with Default Settings
  //------------------------------------------------------------

  var  scatter = nv.models.scatter()
    ;

  var margin = {top: 0, right: 0, bottom: 0, left: 0}
    , width = 960
    , height = 500
    , color = nv.utils.defaultColor() // a function that returns a color
    , getX = function(d) { return d.x } // accessor to get the x value from a data point
    , getY = function(d) { return d.y } // accessor to get the y value from a data point
    , defined = function(d,i) { return !isNaN(getY(d,i)) && getY(d,i) !== null } // allows a line to be not continuous when it is not defined
    , isArea = function(d) { return d.area } // decides if a line is an area or just a line
    , clipEdge = false // if true, masks lines within x and y scale
    , x //can be accessed via chart.xScale()
    , y //can be accessed via chart.yScale()
    , interpolate = "linear" // controls the line interpolation
    ;

  scatter
    .size(16) // default size
    .sizeDomain([16,256]) //set to speed up calculation, needs to be unset if there is a custom size accessor
    ;

  //============================================================


  //============================================================
  // Private Variables
  //------------------------------------------------------------

  var x0, y0 //used to store previous scales
      ;

  //============================================================


  function chart(selection) {
    selection.each(function(data) {
      var availableWidth = width - margin.left - margin.right,
          availableHeight = height - margin.top - margin.bottom,
          container = d3.select(this);

      //------------------------------------------------------------
      // Setup Scales

      x = scatter.xScale();
      y = scatter.yScale();

      x0 = x0 || x;
      y0 = y0 || y;

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup containers and skeleton of chart

      var wrap = container.selectAll('g.nv-wrap.nv-line').data([data]);
      var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-line');
      var defsEnter = wrapEnter.append('defs');
      var gEnter = wrapEnter.append('g');
      var g = wrap.select('g')

      gEnter.append('g').attr('class', 'nv-groups');
      gEnter.append('g').attr('class', 'nv-scatterWrap');

      wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');

      //------------------------------------------------------------




      scatter
        .width(availableWidth)
        .height(availableHeight)

      var scatterWrap = wrap.select('.nv-scatterWrap');
          //.datum(data); // Data automatically trickles down from the wrap

      d3.transition(scatterWrap).call(scatter);



      defsEnter.append('clipPath')
          .attr('id', 'nv-edge-clip-' + scatter.id())
        .append('rect');

      wrap.select('#nv-edge-clip-' + scatter.id() + ' rect')
          .attr('width', availableWidth)
          .attr('height', availableHeight);

      g   .attr('clip-path', clipEdge ? 'url(#nv-edge-clip-' + scatter.id() + ')' : '');
      scatterWrap
          .attr('clip-path', clipEdge ? 'url(#nv-edge-clip-' + scatter.id() + ')' : '');




      var groups = wrap.select('.nv-groups').selectAll('.nv-group')
          .data(function(d) { return d }, function(d) { return d.key });
      groups.enter().append('g')
          .style('stroke-opacity', 1e-6)
          .style('fill-opacity', 1e-6);
      d3.transition(groups.exit())
          .style('stroke-opacity', 1e-6)
          .style('fill-opacity', 1e-6)
          .remove();
      groups
          .attr('class', function(d,i) { return 'nv-group nv-series-' + i })
          .classed('hover', function(d) { return d.hover })
          .style('fill', function(d,i){ return color(d, i) })
          .style('stroke', function(d,i){ return color(d, i)});
      d3.transition(groups)
          .style('stroke-opacity', 1)
          .style('fill-opacity', .5);



      var areaPaths = groups.selectAll('path.nv-area')
          .data(function(d) { return isArea(d) ? [d] : [] }); // this is done differently than lines because I need to check if series is an area
      areaPaths.enter().append('path')
          .attr('class', 'nv-area')
          .attr('d', function(d) {
            return d3.svg.area()
                .interpolate(interpolate)
                .defined(defined)
                .x(function(d,i) { return x0(getX(d,i)) })
                .y0(function(d,i) { return y0(getY(d,i)) })
                .y1(function(d,i) { return y0( y.domain()[0] <= 0 ? y.domain()[1] >= 0 ? 0 : y.domain()[1] : y.domain()[0] ) })
                //.y1(function(d,i) { return y0(0) }) //assuming 0 is within y domain.. may need to tweak this
                .apply(this, [d.values])
          });
      d3.transition(groups.exit().selectAll('path.nv-area'))
          .attr('d', function(d) {
            return d3.svg.area()
                .interpolate(interpolate)
                .defined(defined)
                .x(function(d,i) { return x0(getX(d,i)) })
                .y0(function(d,i) { return y0(getY(d,i)) })
                .y1(function(d,i) { return y0( y.domain()[0] <= 0 ? y.domain()[1] >= 0 ? 0 : y.domain()[1] : y.domain()[0] ) })
                //.y1(function(d,i) { return y0(0) }) //assuming 0 is within y domain.. may need to tweak this
                .apply(this, [d.values])
          });
      d3.transition(areaPaths)
          .attr('d', function(d) {
            return d3.svg.area()
                .interpolate(interpolate)
                .defined(defined)
                .x(function(d,i) { return x0(getX(d,i)) })
                .y0(function(d,i) { return y0(getY(d,i)) })
                .y1(function(d,i) { return y0( y.domain()[0] <= 0 ? y.domain()[1] >= 0 ? 0 : y.domain()[1] : y.domain()[0] ) })
                //.y1(function(d,i) { return y0(0) }) //assuming 0 is within y domain.. may need to tweak this
                .apply(this, [d.values])
          });



      var linePaths = groups.selectAll('path.nv-line')
          .data(function(d) { return [d.values] });
      linePaths.enter().append('path')
          .attr('class', 'nv-line')
          .attr('d',
            d3.svg.line()
              .interpolate(interpolate)
              .defined(defined)
              .x(function(d,i) { return x0(getX(d,i)) })
              .y(function(d,i) { return y0(getY(d,i)) })
          );
      d3.transition(groups.exit().selectAll('path.nv-line'))
          .attr('d',
            d3.svg.line()
              .interpolate(interpolate)
              .defined(defined)
              .x(function(d,i) { return x(getX(d,i)) })
              .y(function(d,i) { return y(getY(d,i)) })
          );
      d3.transition(linePaths)
          .attr('d',
            d3.svg.line()
              .interpolate(interpolate)
              .defined(defined)
              .x(function(d,i) { return x(getX(d,i)) })
              .y(function(d,i) { return y(getY(d,i)) })
          );



      //store old scales for use in transitions on update
      x0 = x.copy();
      y0 = y.copy();

    });

    return chart;
  }


  //============================================================
  // Expose Public Variables
  //------------------------------------------------------------

  chart.dispatch = scatter.dispatch;
  chart.scatter = scatter;

  d3.rebind(chart, scatter, 'id', 'interactive', 'size', 'xScale', 'yScale', 'zScale', 'xDomain', 'yDomain', 'sizeDomain', 'forceX', 'forceY', 'forceSize', 'clipVoronoi', 'clipRadius', 'padData');

  chart.margin = function(_) {
    if (!arguments.length) return margin;
    margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
    margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
    margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
    margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
    return chart;
  };

  chart.width = function(_) {
    if (!arguments.length) return width;
    width = _;
    return chart;
  };

  chart.height = function(_) {
    if (!arguments.length) return height;
    height = _;
    return chart;
  };

  chart.x = function(_) {
    if (!arguments.length) return getX;
    getX = _;
    scatter.x(_);
    return chart;
  };

  chart.y = function(_) {
    if (!arguments.length) return getY;
    getY = _;
    scatter.y(_);
    return chart;
  };

  chart.clipEdge = function(_) {
    if (!arguments.length) return clipEdge;
    clipEdge = _;
    return chart;
  };

  chart.color = function(_) {
    if (!arguments.length) return color;
    color = nv.utils.getColor(_);
    scatter.color(color);
    return chart;
  };

  chart.interpolate = function(_) {
    if (!arguments.length) return interpolate;
    interpolate = _;
    return chart;
  };

  chart.defined = function(_) {
    if (!arguments.length) return defined;
    defined = _;
    return chart;
  };

  chart.isArea = function(_) {
    if (!arguments.length) return isArea;
    isArea = d3.functor(_);
    return chart;
  };

  //============================================================


  return chart;
}

nv.models.lineChart = function() {

  //============================================================
  // Public Variables with Default Settings
  //------------------------------------------------------------

  var lines = nv.models.line()
    , xAxis = nv.models.axis()
    , yAxis = nv.models.axis()
    , legend = nv.models.legend()
    ;

//set margin.right to 23 to fit dates on the x-axis within the chart
  var margin = {top: 30, right: 20, bottom: 50, left: 60}
    , color = nv.utils.defaultColor()
    , width = null
    , height = null
    , showLegend = true
    , tooltips = true
    , tooltip = function(key, x, y, e, graph) {
        return '<h3>' + key + '</h3>' +
               '<p>' +  y + ' at ' + x + '</p>'
      }
    , x
    , y
    , state = {}
    , defaultState = null
    , noData = 'No Data Available.'
    , dispatch = d3.dispatch('tooltipShow', 'tooltipHide', 'stateChange', 'changeState')
    ;

  xAxis
    .orient('bottom')
    .tickPadding(7)
    ;
  yAxis
    .orient('left')
    ;

  //============================================================


  //============================================================
  // Private Variables
  //------------------------------------------------------------

  var showTooltip = function(e, offsetElement) {

    // New addition to calculate position if SVG is scaled with viewBox, may move TODO: consider implementing everywhere else
    if (offsetElement) {
      var svg = d3.select(offsetElement).select('svg');
      var viewBox = svg.attr('viewBox');
      if (viewBox) {
        viewBox = viewBox.split(' ');
        var ratio = parseInt(svg.style('width')) / viewBox[2];
        e.pos[0] = e.pos[0] * ratio;
        e.pos[1] = e.pos[1] * ratio;
      }
    }

    var left = e.pos[0] + ( offsetElement.offsetLeft || 0 ),
        top = e.pos[1] + ( offsetElement.offsetTop || 0),
        x = xAxis.tickFormat()(lines.x()(e.point, e.pointIndex)),
        y = yAxis.tickFormat()(lines.y()(e.point, e.pointIndex)),
        content = tooltip(e.series.key, x, y, e, chart);

    nv.tooltip.show([left, top], content, null, null, offsetElement);
  };

  //============================================================


  function chart(selection) {
    selection.each(function(data) {
      var container = d3.select(this),
          that = this;

      var availableWidth = (width  || parseInt(container.style('width')) || 960)
                             - margin.left - margin.right,
          availableHeight = (height || parseInt(container.style('height')) || 400)
                             - margin.top - margin.bottom;


      chart.update = function() { chart(selection) };
      chart.container = this;

      //set state.disabled
      state.disabled = data.map(function(d) { return !!d.disabled });

      if (!defaultState) {
        var key;
        defaultState = {};
        for (key in state) {
          if (state[key] instanceof Array)
            defaultState[key] = state[key].slice(0);
          else
            defaultState[key] = state[key];
        }
      }

      //------------------------------------------------------------
      // Display noData message if there's nothing to show.

      if (!data || !data.length || !data.filter(function(d) { return d.values.length }).length) {
        var noDataText = container.selectAll('.nv-noData').data([noData]);

        noDataText.enter().append('text')
          .attr('class', 'nvd3 nv-noData')
          .attr('dy', '-.7em')
          .style('text-anchor', 'middle');

        noDataText
          .attr('x', margin.left + availableWidth / 2)
          .attr('y', margin.top + availableHeight / 2)
          .text(function(d) { return d });

        return chart;
      } else {
        container.selectAll('.nv-noData').remove();
      }

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup Scales

      x = lines.xScale();
      y = lines.yScale();

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup containers and skeleton of chart

      var wrap = container.selectAll('g.nv-wrap.nv-lineChart').data([data]);
      var gEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-lineChart').append('g');
      var g = wrap.select('g');

      gEnter.append('g').attr('class', 'nv-x nv-axis');
      gEnter.append('g').attr('class', 'nv-y nv-axis');
      gEnter.append('g').attr('class', 'nv-linesWrap');
      gEnter.append('g').attr('class', 'nv-legendWrap');

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Legend

      if (showLegend) {
        legend.width(availableWidth);

        g.select('.nv-legendWrap')
            .datum(data)
            .call(legend);

        if ( margin.top != legend.height()) {
          margin.top = legend.height();
          availableHeight = (height || parseInt(container.style('height')) || 400)
                             - margin.top - margin.bottom;
        }

        wrap.select('.nv-legendWrap')
            .attr('transform', 'translate(0,' + (-margin.top) +')')
      }

      //------------------------------------------------------------

      wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');


      //------------------------------------------------------------
      // Main Chart Component(s)

      lines
        .width(availableWidth)
        .height(availableHeight)
        .color(data.map(function(d,i) {
          return d.color || color(d, i);
        }).filter(function(d,i) { return !data[i].disabled }));


      var linesWrap = g.select('.nv-linesWrap')
          .datum(data.filter(function(d) { return !d.disabled }))

      d3.transition(linesWrap).call(lines);

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup Axes

      xAxis
        .scale(x)
        .ticks( availableWidth / 100 )
        .tickSize(-availableHeight, 0);

      g.select('.nv-x.nv-axis')
          .attr('transform', 'translate(0,' + y.range()[0] + ')');
      d3.transition(g.select('.nv-x.nv-axis'))
          .call(xAxis);


      yAxis
        .scale(y)
        .ticks( availableHeight / 36 )
        .tickSize( -availableWidth, 0);

      d3.transition(g.select('.nv-y.nv-axis'))
          .call(yAxis);

      //------------------------------------------------------------


      //============================================================
      // Event Handling/Dispatching (in chart's scope)
      //------------------------------------------------------------

      legend.dispatch.on('legendClick', function(d,i) { 
        d.disabled = !d.disabled;

        if (!data.filter(function(d) { return !d.disabled }).length) {
          data.map(function(d) {
            d.disabled = false;
            wrap.selectAll('.nv-series').classed('disabled', false);
            return d;
          });
        }

        state.disabled = data.map(function(d) { return !!d.disabled });
        dispatch.stateChange(state);

        selection.transition().call(chart);
      });

/*
      legend.dispatch.on('legendMouseover', function(d, i) {
        d.hover = true;
        selection.transition().call(chart)
      });

      legend.dispatch.on('legendMouseout', function(d, i) {
        d.hover = false;
        selection.transition().call(chart)
      });
*/

      dispatch.on('tooltipShow', function(e) {
        if (tooltips) showTooltip(e, that.parentNode);
      });


      dispatch.on('changeState', function(e) {

        if (typeof e.disabled !== 'undefined') {
          data.forEach(function(series,i) {
            series.disabled = e.disabled[i];
          });

          state.disabled = e.disabled;
        }

        selection.call(chart);
      });

      //============================================================

    });

    return chart;
  }


  //============================================================
  // Event Handling/Dispatching (out of chart's scope)
  //------------------------------------------------------------

  lines.dispatch.on('elementMouseover.tooltip', function(e) {
    e.pos = [e.pos[0] +  margin.left, e.pos[1] + margin.top];
    dispatch.tooltipShow(e);
  });

  lines.dispatch.on('elementMouseout.tooltip', function(e) {
    dispatch.tooltipHide(e);
  });

  dispatch.on('tooltipHide', function() {
    if (tooltips) nv.tooltip.cleanup();
  });

  //============================================================


  //============================================================
  // Expose Public Variables
  //------------------------------------------------------------

  // expose chart's sub-components
  chart.dispatch = dispatch;
  chart.lines = lines;
  chart.legend = legend;
  chart.xAxis = xAxis;
  chart.yAxis = yAxis;

  d3.rebind(chart, lines, 'defined', 'isArea', 'x', 'y', 'size', 'xScale', 'yScale', 'xDomain', 'yDomain', 'forceX', 'forceY', 'interactive', 'clipEdge', 'clipVoronoi', 'id', 'interpolate');

  chart.margin = function(_) {
    if (!arguments.length) return margin;
    margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
    margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
    margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
    margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
    return chart;
  };

  chart.width = function(_) {
    if (!arguments.length) return width;
    width = _;
    return chart;
  };

  chart.height = function(_) {
    if (!arguments.length) return height;
    height = _;
    return chart;
  };

  chart.color = function(_) {
    if (!arguments.length) return color;
    color = nv.utils.getColor(_);
    legend.color(color);
    return chart;
  };

  chart.showLegend = function(_) {
    if (!arguments.length) return showLegend;
    showLegend = _;
    return chart;
  };

  chart.tooltips = function(_) {
    if (!arguments.length) return tooltips;
    tooltips = _;
    return chart;
  };

  chart.tooltipContent = function(_) {
    if (!arguments.length) return tooltip;
    tooltip = _;
    return chart;
  };

  chart.state = function(_) {
    if (!arguments.length) return state;
    state = _;
    return chart;
  };

  chart.defaultState = function(_) {
    if (!arguments.length) return defaultState;
    defaultState = _;
    return chart;
  };

  chart.noData = function(_) {
    if (!arguments.length) return noData;
    noData = _;
    return chart;
  };

  //============================================================


  return chart;
}

nv.models.linePlusBarChart = function() {

  //============================================================
  // Public Variables with Default Settings
  //------------------------------------------------------------

  var lines = nv.models.line()
    , bars = nv.models.historicalBar()
    , xAxis = nv.models.axis()
    , y1Axis = nv.models.axis()
    , y2Axis = nv.models.axis()
    , legend = nv.models.legend()
    ;

  var margin = {top: 30, right: 60, bottom: 50, left: 60}
    , width = null
    , height = null
    , getX = function(d) { return d.x }
    , getY = function(d) { return d.y }
    , color = nv.utils.defaultColor()
    , showLegend = true
    , tooltips = true
    , tooltip = function(key, x, y, e, graph) {
        return '<h3>' + key + '</h3>' +
               '<p>' +  y + ' at ' + x + '</p>';
      }
    , x
    , y1
    , y2
    , state = {}
    , defaultState = null
    , noData = "No Data Available."
    , dispatch = d3.dispatch('tooltipShow', 'tooltipHide', 'stateChange', 'changeState')
    ;

  bars
    .padData(true)
    ;
  lines
    .clipEdge(false)
    .padData(true)
    ;
  xAxis
    .orient('bottom')
    .tickPadding(7)
    .highlightZero(false)
    ;
  y1Axis
    .orient('left')
    ;
  y2Axis
    .orient('right')
    ;

  //============================================================


  //============================================================
  // Private Variables
  //------------------------------------------------------------

  var showTooltip = function(e, offsetElement) {
      var left = e.pos[0] + ( offsetElement.offsetLeft || 0 ),
          top = e.pos[1] + ( offsetElement.offsetTop || 0),
          x = xAxis.tickFormat()(lines.x()(e.point, e.pointIndex)),
          y = (e.series.bar ? y1Axis : y2Axis).tickFormat()(lines.y()(e.point, e.pointIndex)),
          content = tooltip(e.series.key, x, y, e, chart);

      nv.tooltip.show([left, top], content, e.value < 0 ? 'n' : 's', null, offsetElement);
    }
    ;

  //------------------------------------------------------------



  function chart(selection) {
    selection.each(function(data) {
      var container = d3.select(this),
          that = this;

      var availableWidth = (width  || parseInt(container.style('width')) || 960)
                             - margin.left - margin.right,
          availableHeight = (height || parseInt(container.style('height')) || 400)
                             - margin.top - margin.bottom;

      chart.update = function() { chart(selection) };
      chart.container = this;

      //set state.disabled
      state.disabled = data.map(function(d) { return !!d.disabled });

      if (!defaultState) {
        var key;
        defaultState = {};
        for (key in state) {
          if (state[key] instanceof Array)
            defaultState[key] = state[key].slice(0);
          else
            defaultState[key] = state[key];
        }
      }

      //------------------------------------------------------------
      // Display No Data message if there's nothing to show.

      if (!data || !data.length || !data.filter(function(d) { return d.values.length }).length) {
        var noDataText = container.selectAll('.nv-noData').data([noData]);

        noDataText.enter().append('text')
          .attr('class', 'nvd3 nv-noData')
          .attr('dy', '-.7em')
          .style('text-anchor', 'middle');

        noDataText
          .attr('x', margin.left + availableWidth / 2)
          .attr('y', margin.top + availableHeight / 2)
          .text(function(d) { return d });

        return chart;
      } else {
        container.selectAll('.nv-noData').remove();
      }

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup Scales

      var dataBars = data.filter(function(d) { return !d.disabled && d.bar });
      var dataLines = data.filter(function(d) { return !d.bar }); // removed the !d.disabled clause here to fix Issue #240

      //x = xAxis.scale();
       x = dataLines.filter(function(d) { return !d.disabled; }).length && dataLines.filter(function(d) { return !d.disabled; })[0].values.length ? lines.xScale() : bars.xScale();
      //x = dataLines.filter(function(d) { return !d.disabled; }).length ? lines.xScale() : bars.xScale(); //old code before change above
      y1 = bars.yScale();
      y2 = lines.yScale();

      //------------------------------------------------------------

      //------------------------------------------------------------
      // Setup containers and skeleton of chart

      var wrap = d3.select(this).selectAll('g.nv-wrap.nv-linePlusBar').data([data]);
      var gEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-linePlusBar').append('g');
      var g = wrap.select('g');

      gEnter.append('g').attr('class', 'nv-x nv-axis');
      gEnter.append('g').attr('class', 'nv-y1 nv-axis');
      gEnter.append('g').attr('class', 'nv-y2 nv-axis');
      gEnter.append('g').attr('class', 'nv-barsWrap');
      gEnter.append('g').attr('class', 'nv-linesWrap');
      gEnter.append('g').attr('class', 'nv-legendWrap');

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Legend

      if (showLegend) {
        legend.width( availableWidth / 2 );

        g.select('.nv-legendWrap')
            .datum(data.map(function(series) {
              series.originalKey = series.originalKey === undefined ? series.key : series.originalKey;
              series.key = series.originalKey + (series.bar ? ' (left axis)' : ' (right axis)');
              return series;
            }))
          .call(legend);

        if ( margin.top != legend.height()) {
          margin.top = legend.height();
          availableHeight = (height || parseInt(container.style('height')) || 400)
                             - margin.top - margin.bottom;
        }

        g.select('.nv-legendWrap')
            .attr('transform', 'translate(' + ( availableWidth / 2 ) + ',' + (-margin.top) +')');
      }

      //------------------------------------------------------------


      wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');


      //------------------------------------------------------------
      // Main Chart Component(s)


      lines
        .width(availableWidth)
        .height(availableHeight)
        .color(data.map(function(d,i) {
          return d.color || color(d, i);
        }).filter(function(d,i) { return !data[i].disabled && !data[i].bar }))

      bars
        .width(availableWidth)
        .height(availableHeight)
        .color(data.map(function(d,i) {
          return d.color || color(d, i);
        }).filter(function(d,i) { return !data[i].disabled && data[i].bar }))



      var barsWrap = g.select('.nv-barsWrap')
          .datum(dataBars.length ? dataBars : [{values:[]}])

      var linesWrap = g.select('.nv-linesWrap')
          .datum(dataLines[0] && !dataLines[0].disabled ? dataLines : [{values:[]}] );
          //.datum(!dataLines[0].disabled ? dataLines : [{values:dataLines[0].values.map(function(d) { return [d[0], null] }) }] );

      d3.transition(barsWrap).call(bars);
      d3.transition(linesWrap).call(lines);

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup Axes

      xAxis
        .scale(x)
        .ticks( availableWidth / 100 )
        .tickSize(-availableHeight, 0);

      g.select('.nv-x.nv-axis')
          .attr('transform', 'translate(0,' + y1.range()[0] + ')');
      d3.transition(g.select('.nv-x.nv-axis'))
          .call(xAxis);


      y1Axis
        .scale(y1)
        .ticks( availableHeight / 36 )
        .tickSize(-availableWidth, 0);

      d3.transition(g.select('.nv-y1.nv-axis'))
          .style('opacity', dataBars.length ? 1 : 0)
          .call(y1Axis);


      y2Axis
        .scale(y2)
        .ticks( availableHeight / 36 )
        .tickSize(dataBars.length ? 0 : -availableWidth, 0); // Show the y2 rules only if y1 has none

      g.select('.nv-y2.nv-axis')
          .style('opacity', dataLines.length ? 1 : 0)
          .attr('transform', 'translate(' + availableWidth + ',0)');
          //.attr('transform', 'translate(' + x.range()[1] + ',0)');

      d3.transition(g.select('.nv-y2.nv-axis'))
          .call(y2Axis);

      //------------------------------------------------------------


      //============================================================
      // Event Handling/Dispatching (in chart's scope)
      //------------------------------------------------------------

      legend.dispatch.on('legendClick', function(d,i) { 
        d.disabled = !d.disabled;

        if (!data.filter(function(d) { return !d.disabled }).length) {
          data.map(function(d) {
            d.disabled = false;
            wrap.selectAll('.nv-series').classed('disabled', false);
            return d;
          });
        }

        state.disabled = data.map(function(d) { return !!d.disabled });
        dispatch.stateChange(state);

        selection.transition().call(chart);
      });

      dispatch.on('tooltipShow', function(e) {
        if (tooltips) showTooltip(e, that.parentNode);
      });


      // Update chart from a state object passed to event handler
      dispatch.on('changeState', function(e) {

        if (typeof e.disabled !== 'undefined') {
          data.forEach(function(series,i) {
            series.disabled = e.disabled[i];
          });

          state.disabled = e.disabled;
        }

        selection.call(chart);
      });

      //============================================================


    });

    return chart;
  }


  //============================================================
  // Event Handling/Dispatching (out of chart's scope)
  //------------------------------------------------------------

  lines.dispatch.on('elementMouseover.tooltip', function(e) {
    e.pos = [e.pos[0] +  margin.left, e.pos[1] + margin.top];
    dispatch.tooltipShow(e);
  });

  lines.dispatch.on('elementMouseout.tooltip', function(e) {
    dispatch.tooltipHide(e);
  });

  bars.dispatch.on('elementMouseover.tooltip', function(e) {
    e.pos = [e.pos[0] +  margin.left, e.pos[1] + margin.top];
    dispatch.tooltipShow(e);
  });

  bars.dispatch.on('elementMouseout.tooltip', function(e) {
    dispatch.tooltipHide(e);
  });

  dispatch.on('tooltipHide', function() {
    if (tooltips) nv.tooltip.cleanup();
  });

  //============================================================


  //============================================================
  // Expose Public Variables
  //------------------------------------------------------------

  // expose chart's sub-components
  chart.dispatch = dispatch;
  chart.legend = legend;
  chart.lines = lines;
  chart.bars = bars;
  chart.xAxis = xAxis;
  chart.y1Axis = y1Axis;
  chart.y2Axis = y2Axis;

  d3.rebind(chart, lines, 'defined', 'size', 'clipVoronoi', 'interpolate');
  //TODO: consider rebinding x, y and some other stuff, and simply do soemthign lile bars.x(lines.x()), etc.
  //d3.rebind(chart, lines, 'x', 'y', 'size', 'xDomain', 'yDomain', 'forceX', 'forceY', 'interactive', 'clipEdge', 'clipVoronoi', 'id');

  chart.x = function(_) {
    if (!arguments.length) return getX;
    getX = _;
    lines.x(_);
    bars.x(_);
    return chart;
  };

  chart.y = function(_) {
    if (!arguments.length) return getY;
    getY = _;
    lines.y(_);
    bars.y(_);
    return chart;
  };

  chart.margin = function(_) {
    if (!arguments.length) return margin;
    margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
    margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
    margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
    margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
    return chart;
  };

  chart.width = function(_) {
    if (!arguments.length) return width;
    width = _;
    return chart;
  };

  chart.height = function(_) {
    if (!arguments.length) return height;
    height = _;
    return chart;
  };

  chart.color = function(_) {
    if (!arguments.length) return color;
    color = nv.utils.getColor(_);
    legend.color(color);
    return chart;
  };

  chart.showLegend = function(_) {
    if (!arguments.length) return showLegend;
    showLegend = _;
    return chart;
  };

  chart.tooltips = function(_) {
    if (!arguments.length) return tooltips;
    tooltips = _;
    return chart;
  };

  chart.tooltipContent = function(_) {
    if (!arguments.length) return tooltip;
    tooltip = _;
    return chart;
  };

  chart.state = function(_) {
    if (!arguments.length) return state;
    state = _;
    return chart;
  };

  chart.defaultState = function(_) {
    if (!arguments.length) return defaultState;
    defaultState = _;
    return chart;
  };

  chart.noData = function(_) {
    if (!arguments.length) return noData;
    noData = _;
    return chart;
  };

  //============================================================


  return chart;
}

nv.models.lineWithFocusChart = function() {

  //============================================================
  // Public Variables with Default Settings
  //------------------------------------------------------------

  var lines = nv.models.line()
    , lines2 = nv.models.line()
    , xAxis = nv.models.axis()
    , yAxis = nv.models.axis()
    , x2Axis = nv.models.axis()
    , y2Axis = nv.models.axis()
    , legend = nv.models.legend()
    , brush = d3.svg.brush()
    ;

  var margin = {top: 30, right: 30, bottom: 30, left: 60}
    , margin2 = {top: 0, right: 30, bottom: 20, left: 60}
    , color = nv.utils.defaultColor()
    , width = null
    , height = null
    , height2 = 100
    , x
    , y
    , x2
    , y2
    , showLegend = true
    , brushExtent = null
    , tooltips = true
    , tooltip = function(key, x, y, e, graph) {
        return '<h3>' + key + '</h3>' +
               '<p>' +  y + ' at ' + x + '</p>'
      }
    , noData = "No Data Available."
    , dispatch = d3.dispatch('tooltipShow', 'tooltipHide', 'brush')
    ;

  lines
    .clipEdge(true)
    ;
  lines2
    .interactive(false)
    ;
  xAxis
    .orient('bottom')
    .tickPadding(5)
    ;
  yAxis
    .orient('left')
    ;
  x2Axis
    .orient('bottom')
    .tickPadding(5)
    ;
  y2Axis
    .orient('left')
    ;
  //============================================================


  //============================================================
  // Private Variables
  //------------------------------------------------------------

  var showTooltip = function(e, offsetElement) {
    var left = e.pos[0] + ( offsetElement.offsetLeft || 0 ),
        top = e.pos[1] + ( offsetElement.offsetTop || 0),
        x = xAxis.tickFormat()(lines.x()(e.point, e.pointIndex)),
        y = yAxis.tickFormat()(lines.y()(e.point, e.pointIndex)),
        content = tooltip(e.series.key, x, y, e, chart);

    nv.tooltip.show([left, top], content, null, null, offsetElement);
  };

  //============================================================


  function chart(selection) {
    selection.each(function(data) {
      var container = d3.select(this),
          that = this;

      var availableWidth = (width  || parseInt(container.style('width')) || 960)
                             - margin.left - margin.right,
          availableHeight1 = (height || parseInt(container.style('height')) || 400)
                             - margin.top - margin.bottom - height2,
          availableHeight2 = height2 - margin2.top - margin2.bottom;

      chart.update = function() { chart(selection) };
      chart.container = this;


      //------------------------------------------------------------
      // Display No Data message if there's nothing to show.

      if (!data || !data.length || !data.filter(function(d) { return d.values.length }).length) {
        var noDataText = container.selectAll('.nv-noData').data([noData]);

        noDataText.enter().append('text')
          .attr('class', 'nvd3 nv-noData')
          .attr('dy', '-.7em')
          .style('text-anchor', 'middle');

        noDataText
          .attr('x', margin.left + availableWidth / 2)
          .attr('y', margin.top + availableHeight1 / 2)
          .text(function(d) { return d });

        return chart;
      } else {
        container.selectAll('.nv-noData').remove();
      }

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup Scales

      x = lines.xScale();
      y = lines.yScale();
      x2 = lines2.xScale();
      y2 = lines2.yScale();

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup containers and skeleton of chart

      var wrap = container.selectAll('g.nv-wrap.nv-lineWithFocusChart').data([data]);
      var gEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-lineWithFocusChart').append('g');
      var g = wrap.select('g');

      gEnter.append('g').attr('class', 'nv-legendWrap');

      var focusEnter = gEnter.append('g').attr('class', 'nv-focus');
      focusEnter.append('g').attr('class', 'nv-x nv-axis');
      focusEnter.append('g').attr('class', 'nv-y nv-axis');
      focusEnter.append('g').attr('class', 'nv-linesWrap');

      var contextEnter = gEnter.append('g').attr('class', 'nv-context');
      contextEnter.append('g').attr('class', 'nv-x nv-axis');
      contextEnter.append('g').attr('class', 'nv-y nv-axis');
      contextEnter.append('g').attr('class', 'nv-linesWrap');
      contextEnter.append('g').attr('class', 'nv-brushBackground');
      contextEnter.append('g').attr('class', 'nv-x nv-brush');

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Legend

      if (showLegend) {
        legend.width(availableWidth);

        g.select('.nv-legendWrap')
            .datum(data)
            .call(legend);

        if ( margin.top != legend.height()) {
          margin.top = legend.height();
          availableHeight1 = (height || parseInt(container.style('height')) || 400)
                             - margin.top - margin.bottom - height2;
        }

        g.select('.nv-legendWrap')
            .attr('transform', 'translate(0,' + (-margin.top) +')')
      }

      //------------------------------------------------------------


      wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');


      //------------------------------------------------------------
      // Main Chart Component(s)

      lines
        .width(availableWidth)
        .height(availableHeight1)
        .color(
          data
            .map(function(d,i) {
              return d.color || color(d, i);
            })
            .filter(function(d,i) {
              return !data[i].disabled;
          })
        );

      lines2
        .defined(lines.defined())
        .width(availableWidth)
        .height(availableHeight2)
        .color(
          data
            .map(function(d,i) {
              return d.color || color(d, i);
            })
            .filter(function(d,i) {
              return !data[i].disabled;
          })
        );

      g.select('.nv-context')
          .attr('transform', 'translate(0,' + ( availableHeight1 + margin.bottom + margin2.top) + ')')

      var contextLinesWrap = g.select('.nv-context .nv-linesWrap')
          .datum(data.filter(function(d) { return !d.disabled }))

      d3.transition(contextLinesWrap).call(lines2);

      //------------------------------------------------------------


      /*
      var focusLinesWrap = g.select('.nv-focus .nv-linesWrap')
          .datum(data.filter(function(d) { return !d.disabled }))

      d3.transition(focusLinesWrap).call(lines);
     */


      //------------------------------------------------------------
      // Setup Main (Focus) Axes

      xAxis
        .scale(x)
        .ticks( availableWidth / 100 )
        .tickSize(-availableHeight1, 0);

      yAxis
        .scale(y)
        .ticks( availableHeight1 / 36 )
        .tickSize( -availableWidth, 0);

      g.select('.nv-focus .nv-x.nv-axis')
          .attr('transform', 'translate(0,' + availableHeight1 + ')');

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup Brush

      brush
        .x(x2)
        .on('brush', onBrush);

      if (brushExtent) brush.extent(brushExtent);

      var brushBG = g.select('.nv-brushBackground').selectAll('g')
          .data([brushExtent || brush.extent()])

      var brushBGenter = brushBG.enter()
          .append('g');

      brushBGenter.append('rect')
          .attr('class', 'left')
          .attr('x', 0)
          .attr('y', 0)
          .attr('height', availableHeight2);

      brushBGenter.append('rect')
          .attr('class', 'right')
          .attr('x', 0)
          .attr('y', 0)
          .attr('height', availableHeight2);

      gBrush = g.select('.nv-x.nv-brush')
          .call(brush);
      gBrush.selectAll('rect')
          //.attr('y', -5)
          .attr('height', availableHeight2);
      gBrush.selectAll('.resize').append('path').attr('d', resizePath);

      onBrush();

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup Secondary (Context) Axes

      x2Axis
        .scale(x2)
        .ticks( availableWidth / 100 )
        .tickSize(-availableHeight2, 0);

      g.select('.nv-context .nv-x.nv-axis')
          .attr('transform', 'translate(0,' + y2.range()[0] + ')');
      d3.transition(g.select('.nv-context .nv-x.nv-axis'))
          .call(x2Axis);


      y2Axis
        .scale(y2)
        .ticks( availableHeight2 / 36 )
        .tickSize( -availableWidth, 0);

      d3.transition(g.select('.nv-context .nv-y.nv-axis'))
          .call(y2Axis);

      g.select('.nv-context .nv-x.nv-axis')
          .attr('transform', 'translate(0,' + y2.range()[0] + ')');

      //------------------------------------------------------------


      //============================================================
      // Event Handling/Dispatching (in chart's scope)
      //------------------------------------------------------------

      legend.dispatch.on('legendClick', function(d,i) {
        d.disabled = !d.disabled;

        if (!data.filter(function(d) { return !d.disabled }).length) {
          data.map(function(d) {
            d.disabled = false;
            wrap.selectAll('.nv-series').classed('disabled', false);
            return d;
          });
        }

        selection.transition().call(chart);
      });

      dispatch.on('tooltipShow', function(e) {
        if (tooltips) showTooltip(e, that.parentNode);
      });

      //============================================================


      //============================================================
      // Functions
      //------------------------------------------------------------

      // Taken from crossfilter (http://square.github.com/crossfilter/)
      function resizePath(d) {
        var e = +(d == 'e'),
            x = e ? 1 : -1,
            y = availableHeight2 / 3;
        return 'M' + (.5 * x) + ',' + y
            + 'A6,6 0 0 ' + e + ' ' + (6.5 * x) + ',' + (y + 6)
            + 'V' + (2 * y - 6)
            + 'A6,6 0 0 ' + e + ' ' + (.5 * x) + ',' + (2 * y)
            + 'Z'
            + 'M' + (2.5 * x) + ',' + (y + 8)
            + 'V' + (2 * y - 8)
            + 'M' + (4.5 * x) + ',' + (y + 8)
            + 'V' + (2 * y - 8);
      }


      function updateBrushBG() {
        if (!brush.empty()) brush.extent(brushExtent);
        brushBG
            .data([brush.empty() ? x2.domain() : brushExtent])
            .each(function(d,i) {
              var leftWidth = x2(d[0]) - x.range()[0],
                  rightWidth = x.range()[1] - x2(d[1]);
              d3.select(this).select('.left')
                .attr('width',  leftWidth < 0 ? 0 : leftWidth);

              d3.select(this).select('.right')
                .attr('x', x2(d[1]))
                .attr('width', rightWidth < 0 ? 0 : rightWidth);
            });
      }


      function onBrush() {
        brushExtent = brush.empty() ? null : brush.extent();
        extent = brush.empty() ? x2.domain() : brush.extent();


        dispatch.brush({extent: extent, brush: brush});


        updateBrushBG();

        // Update Main (Focus)
        var focusLinesWrap = g.select('.nv-focus .nv-linesWrap')
            .datum(
              data
                .filter(function(d) { return !d.disabled })
                .map(function(d,i) {
                  return {
                    key: d.key,
                    values: d.values.filter(function(d,i) {
                      return lines.x()(d,i) >= extent[0] && lines.x()(d,i) <= extent[1];
                    })
                  }
                })
            );
        d3.transition(focusLinesWrap).call(lines);


        // Update Main (Focus) Axes
        d3.transition(g.select('.nv-focus .nv-x.nv-axis'))
            .call(xAxis);
        d3.transition(g.select('.nv-focus .nv-y.nv-axis'))
            .call(yAxis);
      }

      //============================================================


    });

    return chart;
  }


  //============================================================
  // Event Handling/Dispatching (out of chart's scope)
  //------------------------------------------------------------

  lines.dispatch.on('elementMouseover.tooltip', function(e) {
    e.pos = [e.pos[0] +  margin.left, e.pos[1] + margin.top];
    dispatch.tooltipShow(e);
  });

  lines.dispatch.on('elementMouseout.tooltip', function(e) {
    dispatch.tooltipHide(e);
  });

  dispatch.on('tooltipHide', function() {
    if (tooltips) nv.tooltip.cleanup();
  });

  //============================================================


  //============================================================
  // Expose Public Variables
  //------------------------------------------------------------

  // expose chart's sub-components
  chart.dispatch = dispatch;
  chart.legend = legend;
  chart.lines = lines;
  chart.lines2 = lines2;
  chart.xAxis = xAxis;
  chart.yAxis = yAxis;
  chart.x2Axis = x2Axis;
  chart.y2Axis = y2Axis;

  d3.rebind(chart, lines, 'defined', 'isArea', 'size', 'xDomain', 'yDomain', 'forceX', 'forceY', 'interactive', 'clipEdge', 'clipVoronoi', 'id');

  chart.x = function(_) {
    if (!arguments.length) return lines.x;
    lines.x(_);
    lines2.x(_);
    return chart;
  };

  chart.y = function(_) {
    if (!arguments.length) return lines.y;
    lines.y(_);
    lines2.y(_);
    return chart;
  };

  chart.margin = function(_) {
    if (!arguments.length) return margin;
    margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
    margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
    margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
    margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
    return chart;
  };

  chart.margin2 = function(_) {
    if (!arguments.length) return margin2;
    margin2 = _;
    return chart;
  };

  chart.width = function(_) {
    if (!arguments.length) return width;
    width = _;
    return chart;
  };

  chart.height = function(_) {
    if (!arguments.length) return height;
    height = _;
    return chart;
  };

  chart.height2 = function(_) {
    if (!arguments.length) return height2;
    height2 = _;
    return chart;
  };

  chart.color = function(_) {
    if (!arguments.length) return color;
    color =nv.utils.getColor(_);
    legend.color(color);
    return chart;
  };

  chart.showLegend = function(_) {
    if (!arguments.length) return showLegend;
    showLegend = _;
    return chart;
  };

  chart.tooltips = function(_) {
    if (!arguments.length) return tooltips;
    tooltips = _;
    return chart;
  };

  chart.tooltipContent = function(_) {
    if (!arguments.length) return tooltip;
    tooltip = _;
    return chart;
  };

  chart.interpolate = function(_) {
    if (!arguments.length) return lines.interpolate();
    lines.interpolate(_);
    lines2.interpolate(_);
    return chart;
  };

  chart.noData = function(_) {
    if (!arguments.length) return noData;
    noData = _;
    return chart;
  };

  // Chart has multiple similar Axes, to prevent code duplication, probably need to link all axis functions manually like below
  chart.xTickFormat = function(_) {
    if (!arguments.length) return xAxis.tickFormat();
    xAxis.tickFormat(_);
    x2Axis.tickFormat(_);
    return chart;
  };

  chart.yTickFormat = function(_) {
    if (!arguments.length) return yAxis.tickFormat();
    yAxis.tickFormat(_);
    y2Axis.tickFormat(_);
    return chart;
  };

  //============================================================


  return chart;
}

nv.models.linePlusBarWithFocusChart = function() {

  //============================================================
  // Public Variables with Default Settings
  //------------------------------------------------------------

  var lines = nv.models.line()
    , lines2 = nv.models.line()
    , bars = nv.models.historicalBar()
    , bars2 = nv.models.historicalBar()
    , xAxis = nv.models.axis()
    , x2Axis = nv.models.axis()
    , y1Axis = nv.models.axis()
    , y2Axis = nv.models.axis()
    , y3Axis = nv.models.axis()
    , y4Axis = nv.models.axis()
    , legend = nv.models.legend()
    , brush = d3.svg.brush()
    ;

  var margin = {top: 30, right: 30, bottom: 30, left: 60}
    , margin2 = {top: 0, right: 30, bottom: 20, left: 60}
    , width = null
    , height = null
    , height2 = 100
    , getX = function(d) { return d.x }
    , getY = function(d) { return d.y }
    , color = nv.utils.defaultColor()
    , showLegend = true
    , extent
    , brushExtent = null
    , tooltips = true
    , tooltip = function(key, x, y, e, graph) {
        return '<h3>' + key + '</h3>' +
               '<p>' +  y + ' at ' + x + '</p>';
      }
    , x
    , x2
    , y1
    , y2
    , y3
    , y4
    , noData = "No Data Available."
    , dispatch = d3.dispatch('tooltipShow', 'tooltipHide', 'brush')
    ;

  lines
    .clipEdge(true)
    ;
  lines2
    .interactive(false)
    ;
  xAxis
    .orient('bottom')
    .tickPadding(5)
    ;
  y1Axis
    .orient('left')
    ;
  y2Axis
    .orient('right')
    ;
  x2Axis
    .orient('bottom')
    .tickPadding(5)
    ;
  y3Axis
    .orient('left')
    ;
  y4Axis
    .orient('right')
    ;

  //============================================================


  //============================================================
  // Private Variables
  //------------------------------------------------------------

  var showTooltip = function(e, offsetElement) {
    if (extent) {
        e.pointIndex += Math.ceil(extent[0]);
    }
    var left = e.pos[0] + ( offsetElement.offsetLeft || 0 ),
        top = e.pos[1] + ( offsetElement.offsetTop || 0),
        x = xAxis.tickFormat()(lines.x()(e.point, e.pointIndex)),
        y = (e.series.bar ? y1Axis : y2Axis).tickFormat()(lines.y()(e.point, e.pointIndex)),
        content = tooltip(e.series.key, x, y, e, chart);

    nv.tooltip.show([left, top], content, e.value < 0 ? 'n' : 's', null, offsetElement);
  };

  //------------------------------------------------------------



  function chart(selection) {
    selection.each(function(data) {
      var container = d3.select(this),
          that = this;

      var availableWidth = (width  || parseInt(container.style('width')) || 960)
                             - margin.left - margin.right,
          availableHeight1 = (height || parseInt(container.style('height')) || 400)
                             - margin.top - margin.bottom - height2,
          availableHeight2 = height2 - margin2.top - margin2.bottom;

      chart.update = function() { chart(selection) };
      chart.container = this;


      //------------------------------------------------------------
      // Display No Data message if there's nothing to show.

      if (!data || !data.length || !data.filter(function(d) { return d.values.length }).length) {
        var noDataText = container.selectAll('.nv-noData').data([noData]);

        noDataText.enter().append('text')
          .attr('class', 'nvd3 nv-noData')
          .attr('dy', '-.7em')
          .style('text-anchor', 'middle');

        noDataText
          .attr('x', margin.left + availableWidth / 2)
          .attr('y', margin.top + availableHeight1 / 2)
          .text(function(d) { return d });

        return chart;
      } else {
        container.selectAll('.nv-noData').remove();
      }

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup Scales

      var dataBars = data.filter(function(d) { return !d.disabled && d.bar });
      var dataLines = data.filter(function(d) { return !d.bar }); // removed the !d.disabled clause here to fix Issue #240

      x = bars.xScale();
      x2 = x2Axis.scale();
      y1 = bars.yScale();
      y2 = lines.yScale();
      y3 = bars2.yScale();
      y4 = lines2.yScale();

      var series1 = data
        .filter(function(d) { return !d.disabled && d.bar })
        .map(function(d) {
          return d.values.map(function(d,i) {
            return { x: getX(d,i), y: getY(d,i) }
          })
        });

      var series2 = data
        .filter(function(d) { return !d.disabled && !d.bar })
        .map(function(d) {
          return d.values.map(function(d,i) {
            return { x: getX(d,i), y: getY(d,i) }
          })
        });

      x   .range([0, availableWidth]);
      
      x2  .domain(d3.extent(d3.merge(series1.concat(series2)), function(d) { return d.x } ))
          .range([0, availableWidth]);


      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup containers and skeleton of chart

      var wrap = container.selectAll('g.nv-wrap.nv-linePlusBar').data([data]);
      var gEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-linePlusBar').append('g');
      var g = wrap.select('g');

      gEnter.append('g').attr('class', 'nv-legendWrap');
      
      var focusEnter = gEnter.append('g').attr('class', 'nv-focus');
      focusEnter.append('g').attr('class', 'nv-x nv-axis');
      focusEnter.append('g').attr('class', 'nv-y1 nv-axis');
      focusEnter.append('g').attr('class', 'nv-y2 nv-axis');
      focusEnter.append('g').attr('class', 'nv-barsWrap');
      focusEnter.append('g').attr('class', 'nv-linesWrap');

      var contextEnter = gEnter.append('g').attr('class', 'nv-context');
      contextEnter.append('g').attr('class', 'nv-x nv-axis');
      contextEnter.append('g').attr('class', 'nv-y1 nv-axis');
      contextEnter.append('g').attr('class', 'nv-y2 nv-axis');
      contextEnter.append('g').attr('class', 'nv-barsWrap');
      contextEnter.append('g').attr('class', 'nv-linesWrap');
      contextEnter.append('g').attr('class', 'nv-brushBackground');
      contextEnter.append('g').attr('class', 'nv-x nv-brush');


      //------------------------------------------------------------


      //------------------------------------------------------------
      // Legend

      if (showLegend) {
        legend.width( availableWidth / 2 );

        g.select('.nv-legendWrap')
            .datum(data.map(function(series) {
              series.originalKey = series.originalKey === undefined ? series.key : series.originalKey;
              series.key = series.originalKey + (series.bar ? ' (left axis)' : ' (right axis)');
              return series;
            }))
          .call(legend);

        if ( margin.top != legend.height()) {
          margin.top = legend.height();
          availableHeight1 = (height || parseInt(container.style('height')) || 400)
                             - margin.top - margin.bottom - height2;
        }

        g.select('.nv-legendWrap')
            .attr('transform', 'translate(' + ( availableWidth / 2 ) + ',' + (-margin.top) +')');
      }

      //------------------------------------------------------------


      wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');


      //------------------------------------------------------------
      // Context Components

      bars2
        .width(availableWidth)
        .height(availableHeight2)
        .color(data.map(function(d,i) {
          return d.color || color(d, i);
        }).filter(function(d,i) { return !data[i].disabled && data[i].bar }));

      lines2
        .width(availableWidth)
        .height(availableHeight2)
        .color(data.map(function(d,i) {
          return d.color || color(d, i);
        }).filter(function(d,i) { return !data[i].disabled && !data[i].bar }));
        
      var bars2Wrap = g.select('.nv-context .nv-barsWrap')
          .datum(dataBars.length ? dataBars : [{values:[]}]);

      var lines2Wrap = g.select('.nv-context .nv-linesWrap')
          .datum(!dataLines[0].disabled ? dataLines : [{values:[]}]);
          
      g.select('.nv-context')
          .attr('transform', 'translate(0,' + ( availableHeight1 + margin.bottom + margin2.top) + ')')

      d3.transition(bars2Wrap).call(bars2);
      d3.transition(lines2Wrap).call(lines2);

      //------------------------------------------------------------



      //------------------------------------------------------------
      // Setup Brush

      brush
        .x(x2)
        .on('brush', onBrush);

      if (brushExtent) brush.extent(brushExtent);

      var brushBG = g.select('.nv-brushBackground').selectAll('g')
          .data([brushExtent || brush.extent()])

      var brushBGenter = brushBG.enter()
          .append('g');

      brushBGenter.append('rect')
          .attr('class', 'left')
          .attr('x', 0)
          .attr('y', 0)
          .attr('height', availableHeight2);

      brushBGenter.append('rect')
          .attr('class', 'right')
          .attr('x', 0)
          .attr('y', 0)
          .attr('height', availableHeight2);

      var gBrush = g.select('.nv-x.nv-brush')
          .call(brush);
      gBrush.selectAll('rect')
          //.attr('y', -5)
          .attr('height', availableHeight2);
      gBrush.selectAll('.resize').append('path').attr('d', resizePath);

      //------------------------------------------------------------

      //------------------------------------------------------------
      // Setup Secondary (Context) Axes

      x2Axis
        .ticks( availableWidth / 100 )
        .tickSize(-availableHeight2, 0);

      g.select('.nv-context .nv-x.nv-axis')
          .attr('transform', 'translate(0,' + y3.range()[0] + ')');
      d3.transition(g.select('.nv-context .nv-x.nv-axis'))
          .call(x2Axis);


      y3Axis
        .scale(y3)
        .ticks( availableHeight2 / 36 )
        .tickSize( -availableWidth, 0);

      g.select('.nv-context .nv-y1.nv-axis')
          .style('opacity', dataBars.length ? 1 : 0)
          .attr('transform', 'translate(0,' + x2.range()[0] + ')');
          
      d3.transition(g.select('.nv-context .nv-y1.nv-axis'))
          .call(y3Axis);
          

      y4Axis
        .scale(y4)
        .ticks( availableHeight2 / 36 )
        .tickSize(dataBars.length ? 0 : -availableWidth, 0); // Show the y2 rules only if y1 has none

      g.select('.nv-context .nv-y2.nv-axis')
          .style('opacity', dataLines.length ? 1 : 0)
          .attr('transform', 'translate(' + x2.range()[1] + ',0)');

      d3.transition(g.select('.nv-context .nv-y2.nv-axis'))
          .call(y4Axis);
          
      //------------------------------------------------------------

      //============================================================
      // Event Handling/Dispatching (in chart's scope)
      //------------------------------------------------------------

      legend.dispatch.on('legendClick', function(d,i) { 
        d.disabled = !d.disabled;

        if (!data.filter(function(d) { return !d.disabled }).length) {
          data.map(function(d) {
            d.disabled = false;
            wrap.selectAll('.nv-series').classed('disabled', false);
            return d;
          });
        }

        selection.call(chart);
      });

      dispatch.on('tooltipShow', function(e) {
        if (tooltips) showTooltip(e, that.parentNode);
      });

      //============================================================


      //============================================================
      // Functions
      //------------------------------------------------------------

      // Taken from crossfilter (http://square.github.com/crossfilter/)
      function resizePath(d) {
        var e = +(d == 'e'),
            x = e ? 1 : -1,
            y = availableHeight2 / 3;
        return 'M' + (.5 * x) + ',' + y
            + 'A6,6 0 0 ' + e + ' ' + (6.5 * x) + ',' + (y + 6)
            + 'V' + (2 * y - 6)
            + 'A6,6 0 0 ' + e + ' ' + (.5 * x) + ',' + (2 * y)
            + 'Z'
            + 'M' + (2.5 * x) + ',' + (y + 8)
            + 'V' + (2 * y - 8)
            + 'M' + (4.5 * x) + ',' + (y + 8)
            + 'V' + (2 * y - 8);
      }


      function updateBrushBG() {
        if (!brush.empty()) brush.extent(brushExtent);
        brushBG
            .data([brush.empty() ? x2.domain() : brushExtent])
            .each(function(d,i) {
              var leftWidth = x2(d[0]) - x2.range()[0],
                  rightWidth = x2.range()[1] - x2(d[1]);
              d3.select(this).select('.left')
                .attr('width',  leftWidth < 0 ? 0 : leftWidth);

              d3.select(this).select('.right')
                .attr('x', x2(d[1]))
                .attr('width', rightWidth < 0 ? 0 : rightWidth);
            });
      }


      function onBrush() {
        brushExtent = brush.empty() ? null : brush.extent();
        extent = brush.empty() ? x2.domain() : brush.extent();


        dispatch.brush({extent: extent, brush: brush});

        updateBrushBG();


        //------------------------------------------------------------
        // Prepare Main (Focus) Bars and Lines
        
        bars
        .width(availableWidth)
        .height(availableHeight1)
        .color(data.map(function(d,i) {
          return d.color || color(d, i);
        }).filter(function(d,i) { return !data[i].disabled && data[i].bar }));


        lines
        .width(availableWidth)
        .height(availableHeight1)
        .color(data.map(function(d,i) {
          return d.color || color(d, i);
        }).filter(function(d,i) { return !data[i].disabled && !data[i].bar }));

        var focusBarsWrap = g.select('.nv-focus .nv-barsWrap')
            .datum(!dataBars.length ? [{values:[]}] :
              dataBars
                .map(function(d,i) {
                  return {
                    key: d.key,
                    values: d.values.filter(function(d,i) {
                      return bars.x()(d,i) >= extent[0] && bars.x()(d,i) <= extent[1];
                    })
                  }
                })
            );
        
        var focusLinesWrap = g.select('.nv-focus .nv-linesWrap')
            .datum(dataLines[0].disabled ? [{values:[]}] :
              dataLines
                .map(function(d,i) {
                  return {
                    key: d.key,
                    values: d.values.filter(function(d,i) {
                      return lines.x()(d,i) >= extent[0] && lines.x()(d,i) <= extent[1];
                    })
                  }
                })
             );
                 
        //------------------------------------------------------------
        
        
        //------------------------------------------------------------
        // Update Main (Focus) X Axis

        if (dataBars.length) {
            x = bars.xScale();
        } else {
            x = lines.xScale();
        }
        
        xAxis
        .scale(x)
        .ticks( availableWidth / 100 )
        .tickSize(-availableHeight1, 0);

        xAxis.domain([Math.ceil(extent[0]), Math.floor(extent[1])]);
        
        d3.transition(g.select('.nv-x.nv-axis'))
          .call(xAxis);
        //------------------------------------------------------------
        
        
        //------------------------------------------------------------
        // Update Main (Focus) Bars and Lines

        d3.transition(focusBarsWrap).call(bars);
        d3.transition(focusLinesWrap).call(lines);
        
        //------------------------------------------------------------
        
          
        //------------------------------------------------------------
        // Setup and Update Main (Focus) Y Axes
        
        g.select('.nv-focus .nv-x.nv-axis')
          .attr('transform', 'translate(0,' + y1.range()[0] + ')');


        y1Axis
        .scale(y1)
        .ticks( availableHeight1 / 36 )
        .tickSize(-availableWidth, 0);

        g.select('.nv-focus .nv-y1.nv-axis')
          .style('opacity', dataBars.length ? 1 : 0);


        y2Axis
        .scale(y2)
        .ticks( availableHeight1 / 36 )
        .tickSize(dataBars.length ? 0 : -availableWidth, 0); // Show the y2 rules only if y1 has none

        g.select('.nv-focus .nv-y2.nv-axis')
          .style('opacity', dataLines.length ? 1 : 0)
          .attr('transform', 'translate(' + x.range()[1] + ',0)');

        d3.transition(g.select('.nv-focus .nv-y1.nv-axis'))
            .call(y1Axis);
        d3.transition(g.select('.nv-focus .nv-y2.nv-axis'))
            .call(y2Axis);
      }

      //============================================================

      onBrush();

    });

    return chart;
  }


  //============================================================
  // Event Handling/Dispatching (out of chart's scope)
  //------------------------------------------------------------

  lines.dispatch.on('elementMouseover.tooltip', function(e) {
    e.pos = [e.pos[0] +  margin.left, e.pos[1] + margin.top];
    dispatch.tooltipShow(e);
  });

  lines.dispatch.on('elementMouseout.tooltip', function(e) {
    dispatch.tooltipHide(e);
  });

  bars.dispatch.on('elementMouseover.tooltip', function(e) {
    e.pos = [e.pos[0] +  margin.left, e.pos[1] + margin.top];
    dispatch.tooltipShow(e);
  });

  bars.dispatch.on('elementMouseout.tooltip', function(e) {
    dispatch.tooltipHide(e);
  });

  dispatch.on('tooltipHide', function() {
    if (tooltips) nv.tooltip.cleanup();
  });

  //============================================================


  //============================================================
  // Expose Public Variables
  //------------------------------------------------------------

  // expose chart's sub-components
  chart.dispatch = dispatch;
  chart.legend = legend;
  chart.lines = lines;
  chart.lines2 = lines2;
  chart.bars = bars;
  chart.bars2 = bars2;
  chart.xAxis = xAxis;
  chart.x2Axis = x2Axis;
  chart.y1Axis = y1Axis;
  chart.y2Axis = y2Axis;
  chart.y3Axis = y3Axis;
  chart.y4Axis = y4Axis;

  d3.rebind(chart, lines, 'defined', 'size', 'clipVoronoi', 'interpolate');
  //TODO: consider rebinding x, y and some other stuff, and simply do soemthign lile bars.x(lines.x()), etc.
  //d3.rebind(chart, lines, 'x', 'y', 'size', 'xDomain', 'yDomain', 'forceX', 'forceY', 'interactive', 'clipEdge', 'clipVoronoi', 'id');

  chart.x = function(_) {
    if (!arguments.length) return getX;
    getX = _;
    lines.x(_);
    bars.x(_);
    return chart;
  };

  chart.y = function(_) {
    if (!arguments.length) return getY;
    getY = _;
    lines.y(_);
    bars.y(_);
    return chart;
  };

  chart.margin = function(_) {
    if (!arguments.length) return margin;
    margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
    margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
    margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
    margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
    return chart;
  };

  chart.width = function(_) {
    if (!arguments.length) return width;
    width = _;
    return chart;
  };

  chart.height = function(_) {
    if (!arguments.length) return height;
    height = _;
    return chart;
  };

  chart.color = function(_) {
    if (!arguments.length) return color;
    color = nv.utils.getColor(_);
    legend.color(color);
    return chart;
  };

  chart.showLegend = function(_) {
    if (!arguments.length) return showLegend;
    showLegend = _;
    return chart;
  };

  chart.tooltips = function(_) {
    if (!arguments.length) return tooltips;
    tooltips = _;
    return chart;
  };

  chart.tooltipContent = function(_) {
    if (!arguments.length) return tooltip;
    tooltip = _;
    return chart;
  };

  chart.noData = function(_) {
    if (!arguments.length) return noData;
    noData = _;
    return chart;
  };

  chart.brushExtent = function(_) {
    if (!arguments.length) return brushExtent;
    brushExtent = _;
    return chart;
  };


  //============================================================


  return chart;
}

nv.models.multiBar = function() {

  //============================================================
  // Public Variables with Default Settings
  //------------------------------------------------------------

  var margin = {top: 0, right: 0, bottom: 0, left: 0}
    , width = 960
    , height = 500
    , x = d3.scale.ordinal()
    , y = d3.scale.linear()
    , id = Math.floor(Math.random() * 10000) //Create semi-unique ID in case user doesn't select one
    , getX = function(d) { return d.x }
    , getY = function(d) { return d.y }
    , forceY = [0] // 0 is forced by default.. this makes sense for the majority of bar graphs... user can always do chart.forceY([]) to remove
    , clipEdge = true
    , stacked = false
    , color = nv.utils.defaultColor()
    , hideable = false
    , barColor = null // adding the ability to set the color for each rather than the whole group
    , disabled // used in conjunction with barColor to communicate from multiBarHorizontalChart what series are disabled
    , delay = 1200
    , xDomain
    , yDomain
    , dispatch = d3.dispatch('chartClick', 'elementClick', 'elementDblClick', 'elementMouseover', 'elementMouseout')
    ;

  //============================================================


  //============================================================
  // Private Variables
  //------------------------------------------------------------

  var x0, y0 //used to store previous scales
      ;

  //============================================================


  function chart(selection) {
    selection.each(function(data) {
      var availableWidth = width - margin.left - margin.right,
          availableHeight = height - margin.top - margin.bottom,
          container = d3.select(this);

      if(hideable && data.length) hideable = [{
        values: data[0].values.map(function(d) {
        return {
          x: d.x,
          y: 0,
          series: d.series,
          size: 0.01
        };}
      )}];

      if (stacked)
        data = d3.layout.stack()
                 .offset('zero')
                 .values(function(d){ return d.values })
                 .y(getY)
                 (!data.length && hideable ? hideable : data);


      //add series index to each data point for reference
      data = data.map(function(series, i) {
        series.values = series.values.map(function(point) {
          point.series = i;
          return point;
        });
        return series;
      });


      //------------------------------------------------------------
      // HACK for negative value stacking
      if (stacked)
        data[0].values.map(function(d,i) {
          var posBase = 0, negBase = 0;
          data.map(function(d) {
            var f = d.values[i]
            f.size = Math.abs(f.y);
            if (f.y<0)  {
              f.y1 = negBase;
              negBase = negBase - f.size;
            } else
            { 
              f.y1 = f.size + posBase;
              posBase = posBase + f.size;
            }
          });
        });

      //------------------------------------------------------------
      // Setup Scales

      // remap and flatten the data for use in calculating the scales' domains
      var seriesData = (xDomain && yDomain) ? [] : // if we know xDomain and yDomain, no need to calculate
            data.map(function(d) {
              return d.values.map(function(d,i) {
                return { x: getX(d,i), y: getY(d,i), y0: d.y0, y1: d.y1 }
              })
            });

      x   .domain(d3.merge(seriesData).map(function(d) { return d.x }))
          .rangeBands([0, availableWidth], .1);

      //y   .domain(yDomain || d3.extent(d3.merge(seriesData).map(function(d) { return d.y + (stacked ? d.y1 : 0) }).concat(forceY)))
      y   .domain(yDomain || d3.extent(d3.merge(seriesData).map(function(d) { return stacked ? (d.y > 0 ? d.y1 : d.y1 + d.y ) : d.y }).concat(forceY)))
          .range([availableHeight, 0]);

      // If scale's domain don't have a range, slightly adjust to make one... so a chart can show a single data point
      if (x.domain()[0] === x.domain()[1] || y.domain()[0] === y.domain()[1]) singlePoint = true;
      if (x.domain()[0] === x.domain()[1])
        x.domain()[0] ?
            x.domain([x.domain()[0] - x.domain()[0] * 0.01, x.domain()[1] + x.domain()[1] * 0.01])
          : x.domain([-1,1]);

      if (y.domain()[0] === y.domain()[1])
        y.domain()[0] ?
            y.domain([y.domain()[0] + y.domain()[0] * 0.01, y.domain()[1] - y.domain()[1] * 0.01])
          : y.domain([-1,1]);


      x0 = x0 || x;
      y0 = y0 || y;

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup containers and skeleton of chart

      var wrap = container.selectAll('g.nv-wrap.nv-multibar').data([data]);
      var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-multibar');
      var defsEnter = wrapEnter.append('defs');
      var gEnter = wrapEnter.append('g');
      var g = wrap.select('g')

      gEnter.append('g').attr('class', 'nv-groups');

      wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');

      //------------------------------------------------------------



      defsEnter.append('clipPath')
          .attr('id', 'nv-edge-clip-' + id)
        .append('rect');
      wrap.select('#nv-edge-clip-' + id + ' rect')
          .attr('width', availableWidth)
          .attr('height', availableHeight);

      g   .attr('clip-path', clipEdge ? 'url(#nv-edge-clip-' + id + ')' : '');



      var groups = wrap.select('.nv-groups').selectAll('.nv-group')
          .data(function(d) { return d }, function(d) { return d.key });
      groups.enter().append('g')
          .style('stroke-opacity', 1e-6)
          .style('fill-opacity', 1e-6);
      d3.transition(groups.exit())
          //.style('stroke-opacity', 1e-6)
          //.style('fill-opacity', 1e-6)
        .selectAll('rect.nv-bar')
        .delay(function(d,i) { return i * delay/ data[0].values.length })
          .attr('y', function(d) { return stacked ? y0(d.y0) : y0(0) })
          .attr('height', 0)
          .remove();
      groups
          .attr('class', function(d,i) { return 'nv-group nv-series-' + i })
          .classed('hover', function(d) { return d.hover })
          .style('fill', function(d,i){ return color(d, i) })
          .style('stroke', function(d,i){ return color(d, i) });
      d3.transition(groups)
          .style('stroke-opacity', 1)
          .style('fill-opacity', .75);


      var bars = groups.selectAll('rect.nv-bar')
          .data(function(d) { return (hideable && !data.length) ? hideable.values : d.values });

      bars.exit().remove();


      var barsEnter = bars.enter().append('rect')
          .attr('class', function(d,i) { return getY(d,i) < 0 ? 'nv-bar negative' : 'nv-bar positive'})
          .attr('x', function(d,i,j) {
              return stacked ? 0 : (j * x.rangeBand() / data.length )
          })
          .attr('y', function(d) { return y0(stacked ? d.y0 : 0) })
          .attr('height', 0)
          .attr('width', x.rangeBand() / (stacked ? 1 : data.length) );
      bars
          .style('fill', function(d,i,j){ return color(d, j, i);  })
          .style('stroke', function(d,i,j){ return color(d, j, i); })
          .on('mouseover', function(d,i) { //TODO: figure out why j works above, but not here
            d3.select(this).classed('hover', true);
            dispatch.elementMouseover({
              value: getY(d,i),
              point: d,
              series: data[d.series],
              pos: [x(getX(d,i)) + (x.rangeBand() * (stacked ? data.length / 2 : d.series + .5) / data.length), y(getY(d,i) + (stacked ? d.y0 : 0))],  // TODO: Figure out why the value appears to be shifted
              pointIndex: i,
              seriesIndex: d.series,
              e: d3.event
            });
          })
          .on('mouseout', function(d,i) {
            d3.select(this).classed('hover', false);
            dispatch.elementMouseout({
              value: getY(d,i),
              point: d,
              series: data[d.series],
              pointIndex: i,
              seriesIndex: d.series,
              e: d3.event
            });
          })
          .on('click', function(d,i) {
            dispatch.elementClick({
              value: getY(d,i),
              point: d,
              series: data[d.series],
              pos: [x(getX(d,i)) + (x.rangeBand() * (stacked ? data.length / 2 : d.series + .5) / data.length), y(getY(d,i) + (stacked ? d.y0 : 0))],  // TODO: Figure out why the value appears to be shifted
              pointIndex: i,
              seriesIndex: d.series,
              e: d3.event
            });
            d3.event.stopPropagation();
          })
          .on('dblclick', function(d,i) {
            dispatch.elementDblClick({
              value: getY(d,i),
              point: d,
              series: data[d.series],
              pos: [x(getX(d,i)) + (x.rangeBand() * (stacked ? data.length / 2 : d.series + .5) / data.length), y(getY(d,i) + (stacked ? d.y0 : 0))],  // TODO: Figure out why the value appears to be shifted
              pointIndex: i,
              seriesIndex: d.series,
              e: d3.event
            });
            d3.event.stopPropagation();
          });
      bars
          .attr('class', function(d,i) { return getY(d,i) < 0 ? 'nv-bar negative' : 'nv-bar positive'})
          .attr('transform', function(d,i) { return 'translate(' + x(getX(d,i)) + ',0)'; })

      if (barColor) {
        if (!disabled) disabled = data.map(function() { return true });
        bars
          //.style('fill', barColor)
          //.style('stroke', barColor)
          //.style('fill', function(d,i,j) { return d3.rgb(barColor(d,i)).darker(j).toString(); })
          //.style('stroke', function(d,i,j) { return d3.rgb(barColor(d,i)).darker(j).toString(); })
          .style('fill', function(d,i,j) { return d3.rgb(barColor(d,i)).darker(  disabled.map(function(d,i) { return i }).filter(function(d,i){ return !disabled[i]  })[j]   ).toString(); })
          .style('stroke', function(d,i,j) { return d3.rgb(barColor(d,i)).darker(  disabled.map(function(d,i) { return i }).filter(function(d,i){ return !disabled[i]  })[j]   ).toString(); });
      }


      if (stacked)
        d3.transition(bars)
            .delay(function(d,i) { return i * delay / data[0].values.length })
            .attr('y', function(d,i) {

              return y((stacked ? d.y1 : 0));
            })
            .attr('height', function(d,i) {
              return Math.max(Math.abs(y(d.y + (stacked ? d.y0 : 0)) - y((stacked ? d.y0 : 0))),1);
            })
            .each('end', function() {
              d3.transition(d3.select(this))
                .attr('x', function(d,i) {
                  return stacked ? 0 : (d.series * x.rangeBand() / data.length )
                })
                .attr('width', x.rangeBand() / (stacked ? 1 : data.length) );
            })
      else
        d3.transition(bars)
          .delay(function(d,i) { return i * delay/ data[0].values.length })
            .attr('x', function(d,i) {
              return d.series * x.rangeBand() / data.length
            })
            .attr('width', x.rangeBand() / data.length)
            .each('end', function() {
              d3.transition(d3.select(this))
                .attr('y', function(d,i) {
                  return getY(d,i) < 0 ?
                          y(0) :
                          y(0) - y(getY(d,i)) < 1 ?
                            y(0) - 1 :
                          y(getY(d,i)) || 0;
              })
              .attr('height', function(d,i) {
                  return Math.max(Math.abs(y(getY(d,i)) - y(0)),1) || 0;
                });
            })


      //store old scales for use in transitions on update
      x0 = x.copy();
      y0 = y.copy();

    });

    return chart;
  }


  //============================================================
  // Expose Public Variables
  //------------------------------------------------------------

  chart.dispatch = dispatch;

  chart.x = function(_) {
    if (!arguments.length) return getX;
    getX = _;
    return chart;
  };

  chart.y = function(_) {
    if (!arguments.length) return getY;
    getY = _;
    return chart;
  };

  chart.margin = function(_) {
    if (!arguments.length) return margin;
    margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
    margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
    margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
    margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
    return chart;
  };

  chart.width = function(_) {
    if (!arguments.length) return width;
    width = _;
    return chart;
  };

  chart.height = function(_) {
    if (!arguments.length) return height;
    height = _;
    return chart;
  };

  chart.xScale = function(_) {
    if (!arguments.length) return x;
    x = _;
    return chart;
  };

  chart.yScale = function(_) {
    if (!arguments.length) return y;
    y = _;
    return chart;
  };

  chart.xDomain = function(_) {
    if (!arguments.length) return xDomain;
    xDomain = _;
    return chart;
  };

  chart.yDomain = function(_) {
    if (!arguments.length) return yDomain;
    yDomain = _;
    return chart;
  };

  chart.forceY = function(_) {
    if (!arguments.length) return forceY;
    forceY = _;
    return chart;
  };

  chart.stacked = function(_) {
    if (!arguments.length) return stacked;
    stacked = _;
    return chart;
  };

  chart.clipEdge = function(_) {
    if (!arguments.length) return clipEdge;
    clipEdge = _;
    return chart;
  };

  chart.color = function(_) {
    if (!arguments.length) return color;
    color = nv.utils.getColor(_);
    return chart;
  };

  chart.barColor = function(_) {
    if (!arguments.length) return barColor;
    barColor = nv.utils.getColor(_);
    return chart;
  };

  chart.disabled = function(_) {
    if (!arguments.length) return disabled;
    disabled = _;
    return chart;
  };

  chart.id = function(_) {
    if (!arguments.length) return id;
    id = _;
    return chart;
  };

  chart.hideable = function(_) {
    if (!arguments.length) return hideable;
    hideable = _;
    return chart;
  };

  chart.delay = function(_) {
    if (!arguments.length) return delay;
    delay = _;
    return chart;
  };

  //============================================================


  return chart;
}

nv.models.multiBarChart = function() {

  //============================================================
  // Public Variables with Default Settings
  //------------------------------------------------------------

  var multibar = nv.models.multiBar()
    , xAxis = nv.models.axis()
    , yAxis = nv.models.axis()
    , legend = nv.models.legend()
    , controls = nv.models.legend()
    ;

  var margin = {top: 30, right: 20, bottom: 30, left: 60}
    , width = null
    , height = null
    , color = nv.utils.defaultColor()
    , showControls = true
    , showLegend = true
    , reduceXTicks = true // if false a tick will show for every data point
    , rotateLabels = 0
    , tooltips = true
    , tooltip = function(key, x, y, e, graph) {
        return '<h3>' + key + '</h3>' +
               '<p>' +  y + ' on ' + x + '</p>'
      }
    , x //can be accessed via chart.xScale()
    , y //can be accessed via chart.yScale()
    , state = { stacked: false }
    , defaultState = null
    , noData = "No Data Available."
    , dispatch = d3.dispatch('tooltipShow', 'tooltipHide', 'stateChange', 'changeState')
    , controlWidth = function() { return showControls ? 180 : 0 }
    ;

  multibar
    .stacked(false)
    ;
  xAxis
    .orient('bottom')
    .tickPadding(7)
    .highlightZero(false)
    .showMaxMin(false)
    .tickFormat(function(d) { return d })
    ;
  yAxis
    .orient('left')
    .tickFormat(d3.format(',.1f'))
    ;

  //============================================================


  //============================================================
  // Private Variables
  //------------------------------------------------------------

  var showTooltip = function(e, offsetElement) {
    var left = e.pos[0] + ( offsetElement.offsetLeft || 0 ),
        top = e.pos[1] + ( offsetElement.offsetTop || 0),
        x = xAxis.tickFormat()(multibar.x()(e.point, e.pointIndex)),
        y = yAxis.tickFormat()(multibar.y()(e.point, e.pointIndex)),
        content = tooltip(e.series.key, x, y, e, chart);

    nv.tooltip.show([left, top], content, e.value < 0 ? 'n' : 's', null, offsetElement);
  };

  //============================================================


  function chart(selection) {
    selection.each(function(data) {
      var container = d3.select(this),
          that = this;

      var availableWidth = (width  || parseInt(container.style('width')) || 960)
                             - margin.left - margin.right,
          availableHeight = (height || parseInt(container.style('height')) || 400)
                             - margin.top - margin.bottom;

      chart.update = function() { selection.transition().call(chart) };
      chart.container = this;

      //set state.disabled
      state.disabled = data.map(function(d) { return !!d.disabled });

      if (!defaultState) {
        var key;
        defaultState = {};
        for (key in state) {
          if (state[key] instanceof Array)
            defaultState[key] = state[key].slice(0);
          else
            defaultState[key] = state[key];
        }
      }
      //------------------------------------------------------------
      // Display noData message if there's nothing to show.

      if (!data || !data.length || !data.filter(function(d) { return d.values.length }).length) {
        var noDataText = container.selectAll('.nv-noData').data([noData]);

        noDataText.enter().append('text')
          .attr('class', 'nvd3 nv-noData')
          .attr('dy', '-.7em')
          .style('text-anchor', 'middle');

        noDataText
          .attr('x', margin.left + availableWidth / 2)
          .attr('y', margin.top + availableHeight / 2)
          .text(function(d) { return d });

        return chart;
      } else {
        container.selectAll('.nv-noData').remove();
      }

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup Scales

      x = multibar.xScale();
      y = multibar.yScale();

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup containers and skeleton of chart

      var wrap = container.selectAll('g.nv-wrap.nv-multiBarWithLegend').data([data]);
      var gEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-multiBarWithLegend').append('g');
      var g = wrap.select('g');

      gEnter.append('g').attr('class', 'nv-x nv-axis');
      gEnter.append('g').attr('class', 'nv-y nv-axis');
      gEnter.append('g').attr('class', 'nv-barsWrap');
      gEnter.append('g').attr('class', 'nv-legendWrap');
      gEnter.append('g').attr('class', 'nv-controlsWrap');

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Legend

      if (showLegend) {
        legend.width(availableWidth - controlWidth());

        if (multibar.barColor())
          data.forEach(function(series,i) {
            series.color = d3.rgb('#ccc').darker(i * 1.5).toString();
          })

        g.select('.nv-legendWrap')
            .datum(data)
            .call(legend);

        if ( margin.top != legend.height()) {
          margin.top = legend.height();
          availableHeight = (height || parseInt(container.style('height')) || 400)
                             - margin.top - margin.bottom;
        }

        g.select('.nv-legendWrap')
            .attr('transform', 'translate(' + controlWidth() + ',' + (-margin.top) +')');
      }

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Controls

      if (showControls) {
        var controlsData = [
          { key: 'Grouped', disabled: multibar.stacked() },
          { key: 'Stacked', disabled: !multibar.stacked() }
        ];

        controls.width(controlWidth()).color(['#444', '#444', '#444']);
        g.select('.nv-controlsWrap')
            .datum(controlsData)
            .attr('transform', 'translate(0,' + (-margin.top) +')')
            .call(controls);
      }

      //------------------------------------------------------------


      wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');


      //------------------------------------------------------------
      // Main Chart Component(s)

      multibar
        .disabled(data.map(function(series) { return series.disabled }))
        .width(availableWidth)
        .height(availableHeight)
        .color(data.map(function(d,i) {
          return d.color || color(d, i);
        }).filter(function(d,i) { return !data[i].disabled }))


      var barsWrap = g.select('.nv-barsWrap')
          .datum(data.filter(function(d) { return !d.disabled }))

      d3.transition(barsWrap).call(multibar);

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup Axes

      xAxis
        .scale(x)
        .ticks( availableWidth / 100 )
        .tickSize(-availableHeight, 0);

      g.select('.nv-x.nv-axis')
          .attr('transform', 'translate(0,' + y.range()[0] + ')');
      d3.transition(g.select('.nv-x.nv-axis'))
          .call(xAxis);

      var xTicks = g.select('.nv-x.nv-axis > g').selectAll('g');

      xTicks
          .selectAll('line, text')
          .style('opacity', 1)

      if (reduceXTicks)
        xTicks
          .filter(function(d,i) {
              return i % Math.ceil(data[0].values.length / (availableWidth / 100)) !== 0;
            })
          .selectAll('text, line')
          .style('opacity', 0);

      if(rotateLabels)
        xTicks
          .selectAll('text')
          .attr('transform', 'rotate(' + rotateLabels + ' 0,0)')
          .attr('text-anchor', rotateLabels > 0 ? 'start' : 'end');
      
      g.select('.nv-x.nv-axis').selectAll('g.nv-axisMaxMin text')
          .style('opacity', 1);

      yAxis
        .scale(y)
        .ticks( availableHeight / 36 )
        .tickSize( -availableWidth, 0);

      d3.transition(g.select('.nv-y.nv-axis'))
          .call(yAxis);

      //------------------------------------------------------------



      //============================================================
      // Event Handling/Dispatching (in chart's scope)
      //------------------------------------------------------------

      legend.dispatch.on('legendClick', function(d,i) {
        d.disabled = !d.disabled;

        if (!data.filter(function(d) { return !d.disabled }).length) {
          data.map(function(d) {
            d.disabled = false;
            wrap.selectAll('.nv-series').classed('disabled', false);
            return d;
          });
        }

        state.disabled = data.map(function(d) { return !!d.disabled });
        dispatch.stateChange(state);

        selection.transition().call(chart);
      });

      controls.dispatch.on('legendClick', function(d,i) {
        if (!d.disabled) return;
        controlsData = controlsData.map(function(s) {
          s.disabled = true;
          return s;
        });
        d.disabled = false;

        switch (d.key) {
          case 'Grouped':
            multibar.stacked(false);
            break;
          case 'Stacked':
            multibar.stacked(true);
            break;
        }

        state.stacked = multibar.stacked();
        dispatch.stateChange(state);

        selection.transition().call(chart);
      });

      dispatch.on('tooltipShow', function(e) {
        if (tooltips) showTooltip(e, that.parentNode)
      });

      // Update chart from a state object passed to event handler
      dispatch.on('changeState', function(e) {

        if (typeof e.disabled !== 'undefined') {
          data.forEach(function(series,i) {
            series.disabled = e.disabled[i];
          });

          state.disabled = e.disabled;
        }

        if (typeof e.stacked !== 'undefined') {
          multibar.stacked(e.stacked);
          state.stacked = e.stacked;
        }

        selection.call(chart);
      });

      //============================================================


    });

    return chart;
  }


  //============================================================
  // Event Handling/Dispatching (out of chart's scope)
  //------------------------------------------------------------

  multibar.dispatch.on('elementMouseover.tooltip', function(e) {
    e.pos = [e.pos[0] +  margin.left, e.pos[1] + margin.top];
    dispatch.tooltipShow(e);
  });

  multibar.dispatch.on('elementMouseout.tooltip', function(e) {
    dispatch.tooltipHide(e);
  });
  dispatch.on('tooltipHide', function() {
    if (tooltips) nv.tooltip.cleanup();
  });

  //============================================================


  //============================================================
  // Expose Public Variables
  //------------------------------------------------------------

  // expose chart's sub-components
  chart.dispatch = dispatch;
  chart.multibar = multibar;
  chart.legend = legend;
  chart.xAxis = xAxis;
  chart.yAxis = yAxis;

  d3.rebind(chart, multibar, 'x', 'y', 'xDomain', 'yDomain', 'forceX', 'forceY', 'clipEdge', 'id', 'stacked', 'delay', 'barColor');

  chart.margin = function(_) {
    if (!arguments.length) return margin;
    margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
    margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
    margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
    margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
    return chart;
  };

  chart.width = function(_) {
    if (!arguments.length) return width;
    width = _;
    return chart;
  };

  chart.height = function(_) {
    if (!arguments.length) return height;
    height = _;
    return chart;
  };

  chart.color = function(_) {
    if (!arguments.length) return color;
    color = nv.utils.getColor(_);
    legend.color(color);
    return chart;
  };

  chart.showControls = function(_) {
    if (!arguments.length) return showControls;
    showControls = _;
    return chart;
  };

  chart.showLegend = function(_) {
    if (!arguments.length) return showLegend;
    showLegend = _;
    return chart;
  };

  chart.reduceXTicks= function(_) {
    if (!arguments.length) return reduceXTicks;
    reduceXTicks = _;
    return chart;
  };

  chart.rotateLabels = function(_) {
    if (!arguments.length) return rotateLabels;
    rotateLabels = _;
    return chart;
  }

  chart.tooltip = function(_) {
    if (!arguments.length) return tooltip;
    tooltip = _;
    return chart;
  };

  chart.tooltips = function(_) {
    if (!arguments.length) return tooltips;
    tooltips = _;
    return chart;
  };

  chart.tooltipContent = function(_) {
    if (!arguments.length) return tooltip;
    tooltip = _;
    return chart;
  };

  chart.state = function(_) {
    if (!arguments.length) return state;
    state = _;
    return chart;
  };

  chart.defaultState = function(_) {
    if (!arguments.length) return defaultState;
    defaultState = _;
    return chart;
  };
  
  chart.noData = function(_) {
    if (!arguments.length) return noData;
    noData = _;
    return chart;
  };

  //============================================================


  return chart;
}

nv.models.multiBarHorizontal = function() {

  //============================================================
  // Public Variables with Default Settings
  //------------------------------------------------------------

  var margin = {top: 0, right: 0, bottom: 0, left: 0}
    , width = 960
    , height = 500
    , id = Math.floor(Math.random() * 10000) //Create semi-unique ID in case user doesn't select one
    , x = d3.scale.ordinal()
    , y = d3.scale.linear()
    , getX = function(d) { return d.x }
    , getY = function(d) { return d.y }
    , forceY = [0] // 0 is forced by default.. this makes sense for the majority of bar graphs... user can always do chart.forceY([]) to remove
    , color = nv.utils.defaultColor()
    , barColor = null // adding the ability to set the color for each rather than the whole group
    , disabled // used in conjunction with barColor to communicate from multiBarHorizontalChart what series are disabled
    , stacked = false
    , showValues = false
    , valuePadding = 60
    , valueFormat = d3.format(',.2f')
    , delay = 1200
    , xDomain
    , yDomain
    , dispatch = d3.dispatch('chartClick', 'elementClick', 'elementDblClick', 'elementMouseover', 'elementMouseout')
    ;

  //============================================================


  //============================================================
  // Private Variables
  //------------------------------------------------------------

  var x0, y0 //used to store previous scales
      ;

  //============================================================


  function chart(selection) {
    selection.each(function(data) {
      var availableWidth = width - margin.left - margin.right,
          availableHeight = height - margin.top - margin.bottom,
          container = d3.select(this);


      if (stacked)
        data = d3.layout.stack()
                 .offset('zero')
                 .values(function(d){ return d.values })
                 .y(getY)
                 (data);


      //add series index to each data point for reference
      data = data.map(function(series, i) {
        series.values = series.values.map(function(point) {
          point.series = i;
          return point;
        });
        return series;
      });



      //------------------------------------------------------------
      // HACK for negative value stacking
      if (stacked)
        data[0].values.map(function(d,i) {
          var posBase = 0, negBase = 0;
          data.map(function(d) {
            var f = d.values[i]
            f.size = Math.abs(f.y);
            if (f.y<0)  {
              f.y1 = negBase - f.size;
              negBase = negBase - f.size;
            } else
            { 
              f.y1 = posBase;
              posBase = posBase + f.size;
            }
          });
        });



      //------------------------------------------------------------
      // Setup Scales

      // remap and flatten the data for use in calculating the scales' domains
      var seriesData = (xDomain && yDomain) ? [] : // if we know xDomain and yDomain, no need to calculate
            data.map(function(d) {
              return d.values.map(function(d,i) {
                return { x: getX(d,i), y: getY(d,i), y0: d.y0, y1: d.y1 }
              })
            });

      x   .domain(xDomain || d3.merge(seriesData).map(function(d) { return d.x }))
          .rangeBands([0, availableHeight], .1);

      //y   .domain(yDomain || d3.extent(d3.merge(seriesData).map(function(d) { return d.y + (stacked ? d.y0 : 0) }).concat(forceY)))
      y   .domain(yDomain || d3.extent(d3.merge(seriesData).map(function(d) { return stacked ? (d.y > 0 ? d.y1 + d.y : d.y1 ) : d.y }).concat(forceY)))

      if (showValues && !stacked)
        y.range([(y.domain()[0] < 0 ? valuePadding : 0), availableWidth - (y.domain()[1] > 0 ? valuePadding : 0) ]);
      else
        y.range([0, availableWidth]);

      x0 = x0 || x;
      y0 = y0 || d3.scale.linear().domain(y.domain()).range([y(0),y(0)]);

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup containers and skeleton of chart

      var wrap = d3.select(this).selectAll('g.nv-wrap.nv-multibarHorizontal').data([data]);
      var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-multibarHorizontal');
      var defsEnter = wrapEnter.append('defs');
      var gEnter = wrapEnter.append('g');
      var g = wrap.select('g');

      gEnter.append('g').attr('class', 'nv-groups');

      wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');

      //------------------------------------------------------------



      var groups = wrap.select('.nv-groups').selectAll('.nv-group')
          .data(function(d) { return d }, function(d) { return d.key });
      groups.enter().append('g')
          .style('stroke-opacity', 1e-6)
          .style('fill-opacity', 1e-6);
      d3.transition(groups.exit())
          .style('stroke-opacity', 1e-6)
          .style('fill-opacity', 1e-6)
          .remove();
      groups
          .attr('class', function(d,i) { return 'nv-group nv-series-' + i })
          .classed('hover', function(d) { return d.hover })
          .style('fill', function(d,i){ return color(d, i) })
          .style('stroke', function(d,i){ return color(d, i) });
      d3.transition(groups)
          .style('stroke-opacity', 1)
          .style('fill-opacity', .75);


      var bars = groups.selectAll('g.nv-bar')
          .data(function(d) { return d.values });

      bars.exit().remove();


      var barsEnter = bars.enter().append('g')
          .attr('transform', function(d,i,j) {
              return 'translate(' + y0(stacked ? d.y0 : 0) + ',' + (stacked ? 0 : (j * x.rangeBand() / data.length ) + x(getX(d,i))) + ')'
          });

      barsEnter.append('rect')
          .attr('width', 0)
          .attr('height', x.rangeBand() / (stacked ? 1 : data.length) )

      bars
          .on('mouseover', function(d,i) { //TODO: figure out why j works above, but not here
            d3.select(this).classed('hover', true);
            dispatch.elementMouseover({
              value: getY(d,i),
              point: d,
              series: data[d.series],
              pos: [ y(getY(d,i) + (stacked ? d.y0 : 0)), x(getX(d,i)) + (x.rangeBand() * (stacked ? data.length / 2 : d.series + .5) / data.length) ],
              pointIndex: i,
              seriesIndex: d.series,
              e: d3.event
            });
          })
          .on('mouseout', function(d,i) {
            d3.select(this).classed('hover', false);
            dispatch.elementMouseout({
              value: getY(d,i),
              point: d,
              series: data[d.series],
              pointIndex: i,
              seriesIndex: d.series,
              e: d3.event
            });
          })
          .on('click', function(d,i) {
            dispatch.elementClick({
              value: getY(d,i),
              point: d,
              series: data[d.series],
              pos: [x(getX(d,i)) + (x.rangeBand() * (stacked ? data.length / 2 : d.series + .5) / data.length), y(getY(d,i) + (stacked ? d.y0 : 0))],  // TODO: Figure out why the value appears to be shifted
              pointIndex: i,
              seriesIndex: d.series,
              e: d3.event
            });
            d3.event.stopPropagation();
          })
          .on('dblclick', function(d,i) {
            dispatch.elementDblClick({
              value: getY(d,i),
              point: d,
              series: data[d.series],
              pos: [x(getX(d,i)) + (x.rangeBand() * (stacked ? data.length / 2 : d.series + .5) / data.length), y(getY(d,i) + (stacked ? d.y0 : 0))],  // TODO: Figure out why the value appears to be shifted
              pointIndex: i,
              seriesIndex: d.series,
              e: d3.event
            });
            d3.event.stopPropagation();
          });


      barsEnter.append('text');

      if (showValues && !stacked) {
        bars.select('text')
            .attr('text-anchor', function(d,i) { return getY(d,i) < 0 ? 'end' : 'start' })
            .attr('y', x.rangeBand() / (data.length * 2))
            .attr('dy', '.32em')
            .text(function(d,i) { return valueFormat(getY(d,i)) })
        d3.transition(bars)
            //.delay(function(d,i) { return i * delay / data[0].values.length })
          .select('text')
            .attr('x', function(d,i) { return getY(d,i) < 0 ? -4 : y(getY(d,i)) - y(0) + 4 })
      } else {
        //bars.selectAll('text').remove();
        bars.selectAll('text').text('');
      }

      bars
          .attr('class', function(d,i) { return getY(d,i) < 0 ? 'nv-bar negative' : 'nv-bar positive'})

      if (barColor) {
        if (!disabled) disabled = data.map(function() { return true });
        bars
          //.style('fill', barColor)
          //.style('stroke', barColor)
          //.style('fill', function(d,i,j) { return d3.rgb(barColor(d,i)).darker(j).toString(); })
          //.style('stroke', function(d,i,j) { return d3.rgb(barColor(d,i)).darker(j).toString(); })
          .style('fill', function(d,i,j) { return d3.rgb(barColor(d,i)).darker(  disabled.map(function(d,i) { return i }).filter(function(d,i){ return !disabled[i]  })[j]   ).toString(); })
          .style('stroke', function(d,i,j) { return d3.rgb(barColor(d,i)).darker(  disabled.map(function(d,i) { return i }).filter(function(d,i){ return !disabled[i]  })[j]   ).toString(); });
      }

      if (stacked)
        d3.transition(bars)
            //.delay(function(d,i) { return i * delay / data[0].values.length })
            .attr('transform', function(d,i) {
              //return 'translate(' + y(d.y0) + ',0)'
              //return 'translate(' + y(d.y0) + ',' + x(getX(d,i)) + ')'
              return 'translate(' + y(d.y1) + ',' + x(getX(d,i)) + ')'
            })
          .select('rect')
            .attr('width', function(d,i) {
              return Math.abs(y(getY(d,i) + d.y0) - y(d.y0))
            })
            .attr('height', x.rangeBand() );
      else
        d3.transition(bars)
          //.delay(function(d,i) { return i * delay / data[0].values.length })
            .attr('transform', function(d,i) {
              //TODO: stacked must be all positive or all negative, not both?
              return 'translate(' + 
              (getY(d,i) < 0 ? y(getY(d,i)) : y(0))
              + ',' +
              (d.series * x.rangeBand() / data.length
              +
              x(getX(d,i)) )
              + ')'
            })
          .select('rect')
            .attr('height', x.rangeBand() / data.length )
            .attr('width', function(d,i) {
              return Math.max(Math.abs(y(getY(d,i)) - y(0)),1)
            });


      //store old scales for use in transitions on update
      x0 = x.copy();
      y0 = y.copy();

    });

    return chart;
  }


  //============================================================
  // Expose Public Variables
  //------------------------------------------------------------

  chart.dispatch = dispatch;

  chart.x = function(_) {
    if (!arguments.length) return getX;
    getX = _;
    return chart;
  };

  chart.y = function(_) {
    if (!arguments.length) return getY;
    getY = _;
    return chart;
  };

  chart.margin = function(_) {
    if (!arguments.length) return margin;
    margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
    margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
    margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
    margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
    return chart;
  };

  chart.width = function(_) {
    if (!arguments.length) return width;
    width = _;
    return chart;
  };

  chart.height = function(_) {
    if (!arguments.length) return height;
    height = _;
    return chart;
  };

  chart.xScale = function(_) {
    if (!arguments.length) return x;
    x = _;
    return chart;
  };

  chart.yScale = function(_) {
    if (!arguments.length) return y;
    y = _;
    return chart;
  };

  chart.xDomain = function(_) {
    if (!arguments.length) return xDomain;
    xDomain = _;
    return chart;
  };

  chart.yDomain = function(_) {
    if (!arguments.length) return yDomain;
    yDomain = _;
    return chart;
  };

  chart.forceY = function(_) {
    if (!arguments.length) return forceY;
    forceY = _;
    return chart;
  };

  chart.stacked = function(_) {
    if (!arguments.length) return stacked;
    stacked = _;
    return chart;
  };

  chart.color = function(_) {
    if (!arguments.length) return color;
    color = nv.utils.getColor(_);
    return chart;
  };

  chart.barColor = function(_) {
    if (!arguments.length) return barColor;
    barColor = nv.utils.getColor(_);
    return chart;
  };

  chart.disabled = function(_) {
    if (!arguments.length) return disabled;
    disabled = _;
    return chart;
  };

  chart.id = function(_) {
    if (!arguments.length) return id;
    id = _;
    return chart;
  };

  chart.delay = function(_) {
    if (!arguments.length) return delay;
    delay = _;
    return chart;
  };

  chart.showValues = function(_) {
    if (!arguments.length) return showValues;
    showValues = _;
    return chart;
  };

  chart.valueFormat= function(_) {
    if (!arguments.length) return valueFormat;
    valueFormat = _;
    return chart;
  };

  chart.valuePadding = function(_) {
    if (!arguments.length) return valuePadding;
    valuePadding = _;
    return chart;
  };

  //============================================================


  return chart;
}

nv.models.multiBarHorizontalChart = function() {

  //============================================================
  // Public Variables with Default Settings
  //------------------------------------------------------------

  var multibar = nv.models.multiBarHorizontal()
    , xAxis = nv.models.axis()
    , yAxis = nv.models.axis()
    , legend = nv.models.legend().height(30)
    , controls = nv.models.legend().height(30)
    ;

  var margin = {top: 30, right: 20, bottom: 50, left: 60}
    , width = null
    , height = null
    , color = nv.utils.defaultColor()
    , showControls = true
    , showLegend = true
    , stacked = false
    , tooltips = true
    , tooltip = function(key, x, y, e, graph) {
        return '<h3>' + key + ' - ' + x + '</h3>' +
               '<p>' +  y + '</p>'
      }
    , x //can be accessed via chart.xScale()
    , y //can be accessed via chart.yScale()
    , state = { stacked: stacked }
    , defaultState = null
    , noData = 'No Data Available.'
    , dispatch = d3.dispatch('tooltipShow', 'tooltipHide', 'stateChange', 'changeState')
    , controlWidth = function() { return showControls ? 180 : 0 }
    ;

  multibar
    .stacked(stacked)
    ;
  xAxis
    .orient('left')
    .tickPadding(5)
    .highlightZero(false)
    .showMaxMin(false)
    .tickFormat(function(d) { return d })
    ;
  yAxis
    .orient('bottom')
    .tickFormat(d3.format(',.1f'))
    ;

  //============================================================


  //============================================================
  // Private Variables
  //------------------------------------------------------------

  var showTooltip = function(e, offsetElement) {
    var left = e.pos[0] + ( offsetElement.offsetLeft || 0 ),
        top = e.pos[1] + ( offsetElement.offsetTop || 0),
        x = xAxis.tickFormat()(multibar.x()(e.point, e.pointIndex)),
        y = yAxis.tickFormat()(multibar.y()(e.point, e.pointIndex)),
        content = tooltip(e.series.key, x, y, e, chart);

    nv.tooltip.show([left, top], content, e.value < 0 ? 'e' : 'w', null, offsetElement);
  };

  //============================================================


  function chart(selection) {
    selection.each(function(data) {
      var container = d3.select(this),
          that = this;

      var availableWidth = (width  || parseInt(container.style('width')) || 960)
                             - margin.left - margin.right,
          availableHeight = (height || parseInt(container.style('height')) || 400)
                             - margin.top - margin.bottom;

      chart.update = function() { selection.transition().call(chart) };
      chart.container = this;

      //set state.disabled
      state.disabled = data.map(function(d) { return !!d.disabled });

      if (!defaultState) {
        var key;
        defaultState = {};
        for (key in state) {
          if (state[key] instanceof Array)
            defaultState[key] = state[key].slice(0);
          else
            defaultState[key] = state[key];
        }
      }

      //------------------------------------------------------------
      // Display No Data message if there's nothing to show.

      if (!data || !data.length || !data.filter(function(d) { return d.values.length }).length) {
        var noDataText = container.selectAll('.nv-noData').data([noData]);

        noDataText.enter().append('text')
          .attr('class', 'nvd3 nv-noData')
          .attr('dy', '-.7em')
          .style('text-anchor', 'middle');

        noDataText
          .attr('x', margin.left + availableWidth / 2)
          .attr('y', margin.top + availableHeight / 2)
          .text(function(d) { return d });

        return chart;
      } else {
        container.selectAll('.nv-noData').remove();
      }

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup Scales

      x = multibar.xScale();
      y = multibar.yScale();

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup containers and skeleton of chart

      var wrap = container.selectAll('g.nv-wrap.nv-multiBarHorizontalChart').data([data]);
      var gEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-multiBarHorizontalChart').append('g');
      var g = wrap.select('g');

      gEnter.append('g').attr('class', 'nv-x nv-axis');
      gEnter.append('g').attr('class', 'nv-y nv-axis');
      gEnter.append('g').attr('class', 'nv-barsWrap');
      gEnter.append('g').attr('class', 'nv-legendWrap');
      gEnter.append('g').attr('class', 'nv-controlsWrap');

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Legend

      if (showLegend) {
        legend.width(availableWidth - controlWidth());

        if (multibar.barColor())
          data.forEach(function(series,i) {
            series.color = d3.rgb('#ccc').darker(i * 1.5).toString();
          })

        g.select('.nv-legendWrap')
            .datum(data)
            .call(legend);

        if ( margin.top != legend.height()) {
          margin.top = legend.height();
          availableHeight = (height || parseInt(container.style('height')) || 400)
                             - margin.top - margin.bottom;
        }

        g.select('.nv-legendWrap')
            .attr('transform', 'translate(' + controlWidth() + ',' + (-margin.top) +')');
      }

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Controls

      if (showControls) {
        var controlsData = [
          { key: 'Grouped', disabled: multibar.stacked() },
          { key: 'Stacked', disabled: !multibar.stacked() }
        ];

        controls.width(controlWidth()).color(['#444', '#444', '#444']);
        g.select('.nv-controlsWrap')
            .datum(controlsData)
            .attr('transform', 'translate(0,' + (-margin.top) +')')
            .call(controls);
      }

      //------------------------------------------------------------


      wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');


      //------------------------------------------------------------
      // Main Chart Component(s)

      multibar
        .disabled(data.map(function(series) { return series.disabled }))
        .width(availableWidth)
        .height(availableHeight)
        .color(data.map(function(d,i) {
          return d.color || color(d, i);
        }).filter(function(d,i) { return !data[i].disabled }))


      var barsWrap = g.select('.nv-barsWrap')
          .datum(data.filter(function(d) { return !d.disabled }))

      d3.transition(barsWrap).call(multibar);

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup Axes

      xAxis
        .scale(x)
        .ticks( availableHeight / 24 )
        .tickSize(-availableWidth, 0);

      d3.transition(g.select('.nv-x.nv-axis'))
          .call(xAxis);

      var xTicks = g.select('.nv-x.nv-axis').selectAll('g');

      xTicks
          .selectAll('line, text')
          .style('opacity', 1)


      yAxis
        .scale(y)
        .ticks( availableWidth / 100 )
        .tickSize( -availableHeight, 0);

      g.select('.nv-y.nv-axis')
          .attr('transform', 'translate(0,' + availableHeight + ')');
      d3.transition(g.select('.nv-y.nv-axis'))
          .call(yAxis);

      //------------------------------------------------------------



      //============================================================
      // Event Handling/Dispatching (in chart's scope)
      //------------------------------------------------------------

      legend.dispatch.on('legendClick', function(d,i) {
        d.disabled = !d.disabled;

        if (!data.filter(function(d) { return !d.disabled }).length) {
          data.map(function(d) {
            d.disabled = false;
            wrap.selectAll('.nv-series').classed('disabled', false);
            return d;
          });
        }

        state.disabled = data.map(function(d) { return !!d.disabled });
        dispatch.stateChange(state);

        selection.transition().call(chart);
      });

      controls.dispatch.on('legendClick', function(d,i) {
        if (!d.disabled) return;
        controlsData = controlsData.map(function(s) {
          s.disabled = true;
          return s;
        });
        d.disabled = false;

        switch (d.key) {
          case 'Grouped':
            multibar.stacked(false);
            break;
          case 'Stacked':
            multibar.stacked(true);
            break;
        }

        state.stacked = multibar.stacked();
        dispatch.stateChange(state);

        selection.transition().call(chart);
      });

      dispatch.on('tooltipShow', function(e) {
        if (tooltips) showTooltip(e, that.parentNode);
      });

      // Update chart from a state object passed to event handler
      dispatch.on('changeState', function(e) {

        if (typeof e.disabled !== 'undefined') {
          data.forEach(function(series,i) {
            series.disabled = e.disabled[i];
          });

          state.disabled = e.disabled;
        }

        if (typeof e.stacked !== 'undefined') {
          multibar.stacked(e.stacked);
          state.stacked = e.stacked;
        }

        selection.call(chart);
      });
      //============================================================


    });

    return chart;
  }


  //============================================================
  // Event Handling/Dispatching (out of chart's scope)
  //------------------------------------------------------------

  multibar.dispatch.on('elementMouseover.tooltip', function(e) {
    e.pos = [e.pos[0] +  margin.left, e.pos[1] + margin.top];
    dispatch.tooltipShow(e);
  });

  multibar.dispatch.on('elementMouseout.tooltip', function(e) {
    dispatch.tooltipHide(e);
  });
  dispatch.on('tooltipHide', function() {
    if (tooltips) nv.tooltip.cleanup();
  });

  //============================================================


  //============================================================
  // Expose Public Variables
  //------------------------------------------------------------

  // expose chart's sub-components
  chart.dispatch = dispatch;
  chart.multibar = multibar;
  chart.legend = legend;
  chart.xAxis = xAxis;
  chart.yAxis = yAxis;

  d3.rebind(chart, multibar, 'x', 'y', 'xDomain', 'yDomain', 'forceX', 'forceY', 'clipEdge', 'id', 'delay', 'showValues', 'valueFormat', 'stacked', 'barColor');

  chart.margin = function(_) {
    if (!arguments.length) return margin;
    margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
    margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
    margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
    margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
    return chart;
  };

  chart.width = function(_) {
    if (!arguments.length) return width;
    width = _;
    return chart;
  };

  chart.height = function(_) {
    if (!arguments.length) return height;
    height = _;
    return chart;
  };

  chart.color = function(_) {
    if (!arguments.length) return color;
    color = nv.utils.getColor(_);
    legend.color(color);
    return chart;
  };

  chart.showControls = function(_) {
    if (!arguments.length) return showControls;
    showControls = _;
    return chart;
  };

  chart.showLegend = function(_) {
    if (!arguments.length) return showLegend;
    showLegend = _;
    return chart;
  };

  chart.tooltip = function(_) {
    if (!arguments.length) return tooltip;
    tooltip = _;
    return chart;
  };

  chart.tooltips = function(_) {
    if (!arguments.length) return tooltips;
    tooltips = _;
    return chart;
  };

  chart.tooltipContent = function(_) {
    if (!arguments.length) return tooltip;
    tooltip = _;
    return chart;
  };

  chart.state = function(_) {
    if (!arguments.length) return state;
    state = _;
    return chart;
  };

  chart.defaultState = function(_) {
    if (!arguments.length) return defaultState;
    defaultState = _;
    return chart;
  };

  chart.noData = function(_) {
    if (!arguments.length) return noData;
    noData = _;
    return chart;
  };

  //============================================================


  return chart;
}
nv.models.multiChart = function() {

  //============================================================
  // Public Variables with Default Settings
  //------------------------------------------------------------

  var margin = {top: 30, right: 20, bottom: 50, left: 60},
      color = d3.scale.category20().range(),
      width = null, 
      height = null,
      showLegend = true,
      tooltips = true,
      tooltip = function(key, x, y, e, graph) {
        return '<h3>' + key + '</h3>' +
               '<p>' +  y + ' at ' + x + '</p>'
      },
      x, y; //can be accessed via chart.lines.[x/y]Scale()

  //============================================================
  // Private Variables
  //------------------------------------------------------------

  var x = d3.scale.linear(),
      yScale1 = d3.scale.linear(),
      yScale2 = d3.scale.linear(),

      lines1 = nv.models.line().yScale(yScale1),
      lines2 = nv.models.line().yScale(yScale2),

      bars1 = nv.models.multiBar().stacked(false).yScale(yScale1),
      bars2 = nv.models.multiBar().stacked(false).yScale(yScale2),

      stack1 = nv.models.stackedArea().yScale(yScale1),
      stack2 = nv.models.stackedArea().yScale(yScale2),

      xAxis = nv.models.axis().scale(x).orient('bottom').tickPadding(5),
      yAxis1 = nv.models.axis().scale(yScale1).orient('left'),
      yAxis2 = nv.models.axis().scale(yScale2).orient('right'),

      legend = nv.models.legend().height(30),
      dispatch = d3.dispatch('tooltipShow', 'tooltipHide');

  var showTooltip = function(e, offsetElement) {
    var left = e.pos[0] + ( offsetElement.offsetLeft || 0 ),
        top = e.pos[1] + ( offsetElement.offsetTop || 0),
        x = xAxis.tickFormat()(lines1.x()(e.point, e.pointIndex)),
        y = ((e.series.yAxis == 2) ? yAxis2 : yAxis1).tickFormat()(lines1.y()(e.point, e.pointIndex)),
        content = tooltip(e.series.key, x, y, e, chart);

    nv.tooltip.show([left, top], content, undefined, undefined, offsetElement.offsetParent);
  };

  function chart(selection) {
    selection.each(function(data) {
      var container = d3.select(this),
          that = this;

      var availableWidth = (width  || parseInt(container.style('width')) || 960)
                             - margin.left - margin.right,
          availableHeight = (height || parseInt(container.style('height')) || 400)
                             - margin.top - margin.bottom;

      var dataLines1 = data.filter(function(d) {return !d.disabled && d.type == 'line' && d.yAxis == 1})
      var dataLines2 = data.filter(function(d) {return !d.disabled && d.type == 'line' && d.yAxis == 2})
      var dataBars1 = data.filter(function(d) {return !d.disabled && d.type == 'bar' && d.yAxis == 1})
      var dataBars2 = data.filter(function(d) {return !d.disabled && d.type == 'bar' && d.yAxis == 2})
      var dataStack1 = data.filter(function(d) {return !d.disabled && d.type == 'area' && d.yAxis == 1})
      var dataStack2 = data.filter(function(d) {return !d.disabled && d.type == 'area' && d.yAxis == 2})

      var series1 = data.filter(function(d) {return !d.disabled && d.yAxis == 1})
            .map(function(d) {
              return d.values.map(function(d,i) {
                return { x: d.x, y: d.y }
              })
            })

      var series2 = data.filter(function(d) {return !d.disabled && d.yAxis == 2})
            .map(function(d) {
              return d.values.map(function(d,i) {
                return { x: d.x, y: d.y }
              })
            })

      x   .domain(d3.extent(d3.merge(series1.concat(series2)), function(d) { return d.x } ))
          .range([0, availableWidth]);

      var wrap = container.selectAll('g.wrap.multiChart').data([data]);
      var gEnter = wrap.enter().append('g').attr('class', 'wrap nvd3 multiChart').append('g');

      gEnter.append('g').attr('class', 'x axis');
      gEnter.append('g').attr('class', 'y1 axis');
      gEnter.append('g').attr('class', 'y2 axis');
      gEnter.append('g').attr('class', 'lines1Wrap');
      gEnter.append('g').attr('class', 'lines2Wrap');
      gEnter.append('g').attr('class', 'bars1Wrap');
      gEnter.append('g').attr('class', 'bars2Wrap');
      gEnter.append('g').attr('class', 'stack1Wrap');
      gEnter.append('g').attr('class', 'stack2Wrap');
      gEnter.append('g').attr('class', 'legendWrap');

      var g = wrap.select('g');

      if (showLegend) {
        legend.width( availableWidth / 2 );

        g.select('.legendWrap')
            .datum(data.map(function(series) { 
              series.originalKey = series.originalKey === undefined ? series.key : series.originalKey;
              series.key = series.originalKey + (series.yAxis == 1 ? '' : ' (right axis)');
              return series;
            }))
          .call(legend);

        if ( margin.top != legend.height()) {
          margin.top = legend.height();
          availableHeight = (height || parseInt(container.style('height')) || 400)
                             - margin.top - margin.bottom;
        }

        g.select('.legendWrap')
            .attr('transform', 'translate(' + ( availableWidth / 2 ) + ',' + (-margin.top) +')');
      }


      lines1
        .width(availableWidth)
        .height(availableHeight)
        .interpolate("monotone")
        .color(data.map(function(d,i) {
          return d.color || color[i % color.length];
        }).filter(function(d,i) { return !data[i].disabled && data[i].yAxis == 1 && data[i].type == 'line'}));

      lines2
        .width(availableWidth)
        .height(availableHeight)
        .interpolate("monotone")
        .color(data.map(function(d,i) {
          return d.color || color[i % color.length];
        }).filter(function(d,i) { return !data[i].disabled && data[i].yAxis == 2 && data[i].type == 'line'}));

      bars1
        .width(availableWidth)
        .height(availableHeight)
        .color(data.map(function(d,i) {
          return d.color || color[i % color.length];
        }).filter(function(d,i) { return !data[i].disabled && data[i].yAxis == 1 && data[i].type == 'bar'}));

      bars2
        .width(availableWidth)
        .height(availableHeight)
        .color(data.map(function(d,i) {
          return d.color || color[i % color.length];
        }).filter(function(d,i) { return !data[i].disabled && data[i].yAxis == 2 && data[i].type == 'bar'}));

      stack1
        .width(availableWidth)
        .height(availableHeight)
        .color(data.map(function(d,i) {
          return d.color || color[i % color.length];
        }).filter(function(d,i) { return !data[i].disabled && data[i].yAxis == 1 && data[i].type == 'area'}));

      stack2
        .width(availableWidth)
        .height(availableHeight)
        .color(data.map(function(d,i) {
          return d.color || color[i % color.length];
        }).filter(function(d,i) { return !data[i].disabled && data[i].yAxis == 2 && data[i].type == 'area'}));

      g.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');


      var lines1Wrap = g.select('.lines1Wrap')
          .datum(dataLines1)
      var bars1Wrap = g.select('.bars1Wrap')
          .datum(dataBars1)
      var stack1Wrap = g.select('.stack1Wrap')
          .datum(dataStack1)

      var lines2Wrap = g.select('.lines2Wrap')
          .datum(dataLines2)
      var bars2Wrap = g.select('.bars2Wrap')
          .datum(dataBars2)
      var stack2Wrap = g.select('.stack2Wrap')
          .datum(dataStack2)

      var extraValue1 = dataStack1.length ? dataStack1.map(function(a){return a.values}).reduce(function(a,b){
        return a.map(function(aVal,i){return {x: aVal.x, y: aVal.y + b[i].y}})
      }).concat([{x:0, y:0}]) : []
      var extraValue2 = dataStack2.length ? dataStack2.map(function(a){return a.values}).reduce(function(a,b){
        return a.map(function(aVal,i){return {x: aVal.x, y: aVal.y + b[i].y}})
      }).concat([{x:0, y:0}]) : []

      yScale1 .domain(d3.extent(d3.merge(series1).concat(extraValue1), function(d) { return d.y } ))
              .range([0, availableHeight])

      yScale2 .domain(d3.extent(d3.merge(series2).concat(extraValue2), function(d) { return d.y } ))
              .range([0, availableHeight])

      lines1.yDomain(yScale1.domain())
      bars1.yDomain(yScale1.domain())
      stack1.yDomain(yScale1.domain())

      lines2.yDomain(yScale2.domain())
      bars2.yDomain(yScale2.domain())
      stack2.yDomain(yScale2.domain())

      if(dataStack1.length){d3.transition(stack1Wrap).call(stack1);}
      if(dataStack2.length){d3.transition(stack2Wrap).call(stack2);}

      if(dataBars1.length){d3.transition(bars1Wrap).call(bars1);}
      if(dataBars2.length){d3.transition(bars2Wrap).call(bars2);}

      if(dataLines1.length){d3.transition(lines1Wrap).call(lines1);}
      if(dataLines2.length){d3.transition(lines2Wrap).call(lines2);}
      


      xAxis
        .ticks( availableWidth / 100 )
        .tickSize(-availableHeight, 0);

      g.select('.x.axis')
          .attr('transform', 'translate(0,' + availableHeight + ')');
      d3.transition(g.select('.x.axis'))
          .call(xAxis);

      yAxis1
        .ticks( availableHeight / 36 )
        .tickSize( -availableWidth, 0);


      d3.transition(g.select('.y1.axis'))
          .call(yAxis1);

      yAxis2
        .ticks( availableHeight / 36 )
        .tickSize( -availableWidth, 0);

      d3.transition(g.select('.y2.axis'))
          .call(yAxis2);

      g.select('.y2.axis')
          .style('opacity', series2.length ? 1 : 0)
          .attr('transform', 'translate(' + x.range()[1] + ',0)');

      legend.dispatch.on('legendClick', function(d,i) { 
        d.disabled = !d.disabled;

        if (!data.filter(function(d) { return !d.disabled }).length) {
          data.map(function(d) {
            d.disabled = false;
            wrap.selectAll('.series').classed('disabled', false);
            return d;
          });
        }
        selection.transition().call(chart);
      });

      dispatch.on('tooltipShow', function(e) {
        if (tooltips) showTooltip(e, that.parentNode);
      });

    });

    chart.update = function() { chart(selection) };
    chart.container = this;

    return chart;
  }


  //============================================================
  // Event Handling/Dispatching (out of chart's scope)
  //------------------------------------------------------------

  lines1.dispatch.on('elementMouseover.tooltip', function(e) {
    e.pos = [e.pos[0] +  margin.left, e.pos[1] + margin.top];
    dispatch.tooltipShow(e);
  });

  lines1.dispatch.on('elementMouseout.tooltip', function(e) {
    dispatch.tooltipHide(e);
  });

  lines2.dispatch.on('elementMouseover.tooltip', function(e) {
    e.pos = [e.pos[0] +  margin.left, e.pos[1] + margin.top];
    dispatch.tooltipShow(e);
  });

  lines2.dispatch.on('elementMouseout.tooltip', function(e) {
    dispatch.tooltipHide(e);
  });

  bars1.dispatch.on('elementMouseover.tooltip', function(e) {
    e.pos = [e.pos[0] +  margin.left, e.pos[1] + margin.top];
    dispatch.tooltipShow(e);
  });

  bars1.dispatch.on('elementMouseout.tooltip', function(e) {
    dispatch.tooltipHide(e);
  });

  bars2.dispatch.on('elementMouseover.tooltip', function(e) {
    e.pos = [e.pos[0] +  margin.left, e.pos[1] + margin.top];
    dispatch.tooltipShow(e);
  });

  bars2.dispatch.on('elementMouseout.tooltip', function(e) {
    dispatch.tooltipHide(e);
  });

  stack1.dispatch.on('tooltipShow', function(e) {
    //disable tooltips when value ~= 0
    //// TODO: consider removing points from voronoi that have 0 value instead of this hack
    if (!Math.round(stack1.y()(e.point) * 100)) {  // 100 will not be good for very small numbers... will have to think about making this valu dynamic, based on data range
      setTimeout(function() { d3.selectAll('.point.hover').classed('hover', false) }, 0);
      return false;
    }

    e.pos = [e.pos[0] + margin.left, e.pos[1] + margin.top],
    dispatch.tooltipShow(e);
  });

  stack1.dispatch.on('tooltipHide', function(e) {
    dispatch.tooltipHide(e);
  });

  stack2.dispatch.on('tooltipShow', function(e) {
    //disable tooltips when value ~= 0
    //// TODO: consider removing points from voronoi that have 0 value instead of this hack
    if (!Math.round(stack2.y()(e.point) * 100)) {  // 100 will not be good for very small numbers... will have to think about making this valu dynamic, based on data range
      setTimeout(function() { d3.selectAll('.point.hover').classed('hover', false) }, 0);
      return false;
    }

    e.pos = [e.pos[0] + margin.left, e.pos[1] + margin.top],
    dispatch.tooltipShow(e);
  });

  stack2.dispatch.on('tooltipHide', function(e) {
    dispatch.tooltipHide(e);
  });

    lines1.dispatch.on('elementMouseover.tooltip', function(e) {
    e.pos = [e.pos[0] +  margin.left, e.pos[1] + margin.top];
    dispatch.tooltipShow(e);
  });

  lines1.dispatch.on('elementMouseout.tooltip', function(e) {
    dispatch.tooltipHide(e);
  });

  lines2.dispatch.on('elementMouseover.tooltip', function(e) {
    e.pos = [e.pos[0] +  margin.left, e.pos[1] + margin.top];
    dispatch.tooltipShow(e);
  });

  lines2.dispatch.on('elementMouseout.tooltip', function(e) {
    dispatch.tooltipHide(e);
  });

  dispatch.on('tooltipHide', function() {
    if (tooltips) nv.tooltip.cleanup();
  });



  //============================================================
  // Global getters and setters
  //------------------------------------------------------------

  chart.dispatch = dispatch;
  chart.lines1 = lines1;
  chart.lines2 = lines2;
  chart.bars1 = bars1;
  chart.bars2 = bars2;
  chart.stack1 = stack1;
  chart.stack2 = stack2;
  chart.xAxis = xAxis;
  chart.yAxis1 = yAxis1;
  chart.yAxis2 = yAxis2;

  chart.x = function(_) {
    if (!arguments.length) return getX;
    getX = _;
    lines1.x(_);
    bars1.x(_);
    return chart;
  };

  chart.y = function(_) {
    if (!arguments.length) return getY;
    getY = _;
    lines1.y(_);
    bars1.y(_);
    return chart;
  };

  chart.margin = function(_) {
    if (!arguments.length) return margin;
    margin = _;
    return chart;
  };

  chart.width = function(_) {
    if (!arguments.length) return width;
    width = _;
    return chart;
  };

  chart.height = function(_) {
    if (!arguments.length) return height;
    height = _;
    return chart;
  };

  chart.color = function(_) {
    if (!arguments.length) return color;
    color = _;
    legend.color(_);
    return chart;
  };

  chart.showLegend = function(_) {
    if (!arguments.length) return showLegend;
    showLegend = _;
    return chart;
  };

  chart.tooltips = function(_) {
    if (!arguments.length) return tooltips;
    tooltips = _;
    return chart;
  };

  chart.tooltipContent = function(_) {
    if (!arguments.length) return tooltip;
    tooltip = _;
    return chart;
  };

  return chart;
}


nv.models.ohlcBar = function() {

  //============================================================
  // Public Variables with Default Settings
  //------------------------------------------------------------

  var margin = {top: 0, right: 0, bottom: 0, left: 0}
    , width = 960
    , height = 500
    , id = Math.floor(Math.random() * 10000) //Create semi-unique ID in case user doesn't select one
    , x = d3.scale.linear()
    , y = d3.scale.linear()
    , getX = function(d) { return d.x }
    , getY = function(d) { return d.y }
    , getOpen = function(d) { return d.open }
    , getClose = function(d) { return d.close }
    , getHigh = function(d) { return d.high }
    , getLow = function(d) { return d.low }
    , forceX = []
    , forceY = []
    , padData     = false // If true, adds half a data points width to front and back, for lining up a line chart with a bar chart
    , clipEdge = true
    , color = nv.utils.defaultColor()
    , xDomain
    , yDomain
    , dispatch = d3.dispatch('chartClick', 'elementClick', 'elementDblClick', 'elementMouseover', 'elementMouseout')
    ;

  //============================================================

  //============================================================
  // Private Variables
  //------------------------------------------------------------

  //TODO: store old scales for transitions

  //============================================================


  function chart(selection) {
    selection.each(function(data) {
      var availableWidth = width - margin.left - margin.right,
          availableHeight = height - margin.top - margin.bottom,
          container = d3.select(this);


      //------------------------------------------------------------
      // Setup Scales

      x   .domain(xDomain || d3.extent(data[0].values.map(getX).concat(forceX) ));

      if (padData)
        x.range([availableWidth * .5 / data[0].values.length, availableWidth * (data[0].values.length - .5)  / data[0].values.length ]);
      else
        x.range([0, availableWidth]);

      y   .domain(yDomain || [
            d3.min(data[0].values.map(getLow).concat(forceY)),
            d3.max(data[0].values.map(getHigh).concat(forceY))
          ])
          .range([availableHeight, 0]);

      // If scale's domain don't have a range, slightly adjust to make one... so a chart can show a single data point
      if (x.domain()[0] === x.domain()[1] || y.domain()[0] === y.domain()[1]) singlePoint = true;
      if (x.domain()[0] === x.domain()[1])
        x.domain()[0] ?
            x.domain([x.domain()[0] - x.domain()[0] * 0.01, x.domain()[1] + x.domain()[1] * 0.01])
          : x.domain([-1,1]);

      if (y.domain()[0] === y.domain()[1])
        y.domain()[0] ?
            y.domain([y.domain()[0] + y.domain()[0] * 0.01, y.domain()[1] - y.domain()[1] * 0.01])
          : y.domain([-1,1]);

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup containers and skeleton of chart

      var wrap = d3.select(this).selectAll('g.nv-wrap.nv-ohlcBar').data([data[0].values]);
      var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-ohlcBar');
      var defsEnter = wrapEnter.append('defs');
      var gEnter = wrapEnter.append('g');
      var g = wrap.select('g');

      gEnter.append('g').attr('class', 'nv-ticks');

      wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');

      //------------------------------------------------------------


      container
          .on('click', function(d,i) {
            dispatch.chartClick({
                data: d,
                index: i,
                pos: d3.event,
                id: id
            });
          });


      defsEnter.append('clipPath')
          .attr('id', 'nv-chart-clip-path-' + id)
        .append('rect');

      wrap.select('#nv-chart-clip-path-' + id + ' rect')
          .attr('width', availableWidth)
          .attr('height', availableHeight);

      g   .attr('clip-path', clipEdge ? 'url(#nv-chart-clip-path-' + id + ')' : '');



      var ticks = wrap.select('.nv-ticks').selectAll('.nv-tick')
          .data(function(d) { return d });

      ticks.exit().remove();


      var ticksEnter = ticks.enter().append('path')
          .attr('class', function(d,i,j) { return (getOpen(d,i) > getClose(d,i) ? 'nv-tick negative' : 'nv-tick positive') + ' nv-tick-' + j + '-' + i })
          .attr('d', function(d,i) {
            var w = (availableWidth / data[0].values.length) * .9;
            return 'm0,0l0,'
                 + (y(getOpen(d,i))
                 - y(getHigh(d,i)))
                 + 'l'
                 + (-w/2)
                 + ',0l'
                 + (w/2)
                 + ',0l0,'
                 + (y(getLow(d,i)) - y(getOpen(d,i)))
                 + 'l0,'
                 + (y(getClose(d,i))
                 - y(getLow(d,i)))
                 + 'l'
                 + (w/2)
                 + ',0l'
                 + (-w/2)
                 + ',0z';
          })
          .attr('transform', function(d,i) { return 'translate(' + x(getX(d,i)) + ',' + y(getHigh(d,i)) + ')'; })
          //.attr('fill', function(d,i) { return color[0]; })
          //.attr('stroke', function(d,i) { return color[0]; })
          //.attr('x', 0 )
          //.attr('y', function(d,i) {  return y(Math.max(0, getY(d,i))) })
          //.attr('height', function(d,i) { return Math.abs(y(getY(d,i)) - y(0)) })
          .on('mouseover', function(d,i) {
            d3.select(this).classed('hover', true);
            dispatch.elementMouseover({
                point: d,
                series: data[0],
                pos: [x(getX(d,i)), y(getY(d,i))],  // TODO: Figure out why the value appears to be shifted
                pointIndex: i,
                seriesIndex: 0,
                e: d3.event
            });

          })
          .on('mouseout', function(d,i) {
                d3.select(this).classed('hover', false);
                dispatch.elementMouseout({
                    point: d,
                    series: data[0],
                    pointIndex: i,
                    seriesIndex: 0,
                    e: d3.event
                });
          })
          .on('click', function(d,i) {
                dispatch.elementClick({
                    //label: d[label],
                    value: getY(d,i),
                    data: d,
                    index: i,
                    pos: [x(getX(d,i)), y(getY(d,i))],
                    e: d3.event,
                    id: id
                });
              d3.event.stopPropagation();
          })
          .on('dblclick', function(d,i) {
              dispatch.elementDblClick({
                  //label: d[label],
                  value: getY(d,i),
                  data: d,
                  index: i,
                  pos: [x(getX(d,i)), y(getY(d,i))],
                  e: d3.event,
                  id: id
              });
              d3.event.stopPropagation();
          });

      ticks
          .attr('class', function(d,i,j) { return (getOpen(d,i) > getClose(d,i) ? 'nv-tick negative' : 'nv-tick positive') + ' nv-tick-' + j + '-' + i })
      d3.transition(ticks)
          .attr('transform', function(d,i) { return 'translate(' + x(getX(d,i)) + ',' + y(getHigh(d,i)) + ')'; })
          .attr('d', function(d,i) {
            var w = (availableWidth / data[0].values.length) * .9;
            return 'm0,0l0,'
                 + (y(getOpen(d,i))
                 - y(getHigh(d,i)))
                 + 'l'
                 + (-w/2)
                 + ',0l'
                 + (w/2)
                 + ',0l0,'
                 + (y(getLow(d,i))
                 - y(getOpen(d,i)))
                 + 'l0,'
                 + (y(getClose(d,i))
                 - y(getLow(d,i)))
                 + 'l'
                 + (w/2)
                 + ',0l'
                 + (-w/2)
                 + ',0z';
          })
          //.attr('width', (availableWidth / data[0].values.length) * .9 )


      //d3.transition(ticks)
          //.attr('y', function(d,i) {  return y(Math.max(0, getY(d,i))) })
          //.attr('height', function(d,i) { return Math.abs(y(getY(d,i)) - y(0)) });
          //.order();  // not sure if this makes any sense for this model

    });

    return chart;
  }


  //============================================================
  // Expose Public Variables
  //------------------------------------------------------------

  chart.dispatch = dispatch;

  chart.x = function(_) {
    if (!arguments.length) return getX;
    getX = _;
    return chart;
  };

  chart.y = function(_) {
    if (!arguments.length) return getY;
    getY = _;
    return chart;
  };

  chart.open = function(_) {
    if (!arguments.length) return getOpen;
    getOpen = _;
    return chart;
  };

  chart.close = function(_) {
    if (!arguments.length) return getClose;
    getClose = _;
    return chart;
  };

  chart.high = function(_) {
    if (!arguments.length) return getHigh;
    getHigh = _;
    return chart;
  };

  chart.low = function(_) {
    if (!arguments.length) return getLow;
    getLow = _;
    return chart;
  };

  chart.margin = function(_) {
    if (!arguments.length) return margin;
    margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
    margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
    margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
    margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
    return chart;
  };

  chart.width = function(_) {
    if (!arguments.length) return width;
    width = _;
    return chart;
  };

  chart.height = function(_) {
    if (!arguments.length) return height;
    height = _;
    return chart;
  };

  chart.xScale = function(_) {
    if (!arguments.length) return x;
    x = _;
    return chart;
  };

  chart.yScale = function(_) {
    if (!arguments.length) return y;
    y = _;
    return chart;
  };

  chart.xDomain = function(_) {
    if (!arguments.length) return xDomain;
    xDomain = _;
    return chart;
  };

  chart.yDomain = function(_) {
    if (!arguments.length) return yDomain;
    yDomain = _;
    return chart;
  };

  chart.forceX = function(_) {
    if (!arguments.length) return forceX;
    forceX = _;
    return chart;
  };

  chart.forceY = function(_) {
    if (!arguments.length) return forceY;
    forceY = _;
    return chart;
  };

  chart.padData = function(_) {
    if (!arguments.length) return padData;
    padData = _;
    return chart;
  };

  chart.clipEdge = function(_) {
    if (!arguments.length) return clipEdge;
    clipEdge = _;
    return chart;
  };

  chart.color = function(_) {
    if (!arguments.length) return color;
    color = nv.utils.getColor(_);
    return chart;
  };

  chart.id = function(_) {
    if (!arguments.length) return id;
    id = _;
    return chart;
  };

  //============================================================


  return chart;
}
nv.models.pie = function() {

  //============================================================
  // Public Variables with Default Settings
  //------------------------------------------------------------

  var margin = {top: 0, right: 0, bottom: 0, left: 0}
    , width = 500
    , height = 500
    , getValues = function(d) { return d.values }
    , getX = function(d) { return d.x }
    , getY = function(d) { return d.y }
    , getDescription = function(d) { return d.description }
    , id = Math.floor(Math.random() * 10000) //Create semi-unique ID in case user doesn't select one
    , color = nv.utils.defaultColor()
    , valueFormat = d3.format(',.2f')
    , showLabels = true
    , pieLabelsOutside = true
    , donutLabelsOutside = false
    , labelThreshold = .02 //if slice percentage is under this, don't show label
    , donut = false
    , labelSunbeamLayout = false
    , startAngle = false
    , endAngle = false
    , donutRatio = 0.5
    , dispatch = d3.dispatch('chartClick', 'elementClick', 'elementDblClick', 'elementMouseover', 'elementMouseout')
    ;

  //============================================================


  function chart(selection) {
    selection.each(function(data) {
      var availableWidth = width - margin.left - margin.right,
          availableHeight = height - margin.top - margin.bottom,
          radius = Math.min(availableWidth, availableHeight) / 2,
          arcRadius = radius-(radius / 5),
          container = d3.select(this);


      //------------------------------------------------------------
      // Setup containers and skeleton of chart

      //var wrap = container.selectAll('.nv-wrap.nv-pie').data([data]);
      var wrap = container.selectAll('.nv-wrap.nv-pie').data([getValues(data[0])]);
      var wrapEnter = wrap.enter().append('g').attr('class','nvd3 nv-wrap nv-pie nv-chart-' + id);
      var gEnter = wrapEnter.append('g');
      var g = wrap.select('g');

      gEnter.append('g').attr('class', 'nv-pie');

      wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
      g.select('.nv-pie').attr('transform', 'translate(' + availableWidth / 2 + ',' + availableHeight / 2 + ')');

      //------------------------------------------------------------


      container
          .on('click', function(d,i) {
              dispatch.chartClick({
                  data: d,
                  index: i,
                  pos: d3.event,
                  id: id
              });
          });


      var arc = d3.svg.arc()
                  .outerRadius(arcRadius);

      if (startAngle) arc.startAngle(startAngle)
      if (endAngle) arc.endAngle(endAngle);
      if (donut) arc.innerRadius(radius * donutRatio);

      // Setup the Pie chart and choose the data element
      var pie = d3.layout.pie()
          .sort(null)
          .value(function(d) { return d.disabled ? 0 : getY(d) });

      var slices = wrap.select('.nv-pie').selectAll('.nv-slice')
          .data(pie);

      slices.exit().remove();

      var ae = slices.enter().append('g')
              .attr('class', 'nv-slice')
              .on('mouseover', function(d,i){
                d3.select(this).classed('hover', true);
                dispatch.elementMouseover({
                    label: getX(d.data),
                    value: getY(d.data),
                    point: d.data,
                    pointIndex: i,
                    pos: [d3.event.pageX, d3.event.pageY],
                    id: id
                });
              })
              .on('mouseout', function(d,i){
                d3.select(this).classed('hover', false);
                dispatch.elementMouseout({
                    label: getX(d.data),
                    value: getY(d.data),
                    point: d.data,
                    index: i,
                    id: id
                });
              })
              .on('click', function(d,i) {
                dispatch.elementClick({
                    label: getX(d.data),
                    value: getY(d.data),
                    point: d.data,
                    index: i,
                    pos: d3.event,
                    id: id
                });
                d3.event.stopPropagation();
              })
              .on('dblclick', function(d,i) {
                dispatch.elementDblClick({
                    label: getX(d.data),
                    value: getY(d.data),
                    point: d.data,
                    index: i,
                    pos: d3.event,
                    id: id
                });
                d3.event.stopPropagation();
              });

        slices
            .attr('fill', function(d,i) { return color(d, i); })
            .attr('stroke', function(d,i) { return color(d, i); });

        var paths = ae.append('path')
            .each(function(d) { this._current = d; });
            //.attr('d', arc);

        d3.transition(slices.select('path'))
            .attr('d', arc)
            .attrTween('d', arcTween);

        if (showLabels) {
          // This does the normal label
          var labelsArc = d3.svg.arc().innerRadius(0);
          
          if (pieLabelsOutside){ labelsArc = arc; }

          if (donutLabelsOutside) { labelsArc = d3.svg.arc().outerRadius(arc.outerRadius()); }

          ae.append("g").classed("nv-label", true)
            .each(function(d, i) {
              var group = d3.select(this);

              group
                .attr('transform', function(d) {
                     if (labelSunbeamLayout) {
                       d.outerRadius = arcRadius + 10; // Set Outer Coordinate
                       d.innerRadius = arcRadius + 15; // Set Inner Coordinate
                       var rotateAngle = (d.startAngle + d.endAngle) / 2 * (180 / Math.PI);
                       if ((d.startAngle+d.endAngle)/2 < Math.PI) {
                       	 rotateAngle -= 90;
                       } else {
                       	 rotateAngle += 90;
                       }
                       return 'translate(' + labelsArc.centroid(d) + ') rotate(' + rotateAngle + ')';
                     } else {
                       d.outerRadius = radius + 10; // Set Outer Coordinate
                       d.innerRadius = radius + 15; // Set Inner Coordinate
                       return 'translate(' + labelsArc.centroid(d) + ')'
                     }
                });

              group.append('rect')
                  .style('stroke', '#fff')
                  .style('fill', '#fff')
                  .attr("rx", 3)
                  .attr("ry", 3);

              group.append('text')
                  .style('text-anchor', labelSunbeamLayout ? ((d.startAngle + d.endAngle) / 2 < Math.PI ? 'start' : 'end') : 'middle') //center the text on it's origin or begin/end if orthogonal aligned
                  .style('fill', '#000')


          });

          slices.select(".nv-label").transition()
            .attr('transform', function(d) {
            	if (labelSunbeamLayout) {
                  d.outerRadius = arcRadius + 10; // Set Outer Coordinate
                  d.innerRadius = arcRadius + 15; // Set Inner Coordinate
                  var rotateAngle = (d.startAngle + d.endAngle) / 2 * (180 / Math.PI);
                  if ((d.startAngle+d.endAngle)/2 < Math.PI) {
                    rotateAngle -= 90;
                  } else {
                    rotateAngle += 90;
                  }
                  return 'translate(' + labelsArc.centroid(d) + ') rotate(' + rotateAngle + ')';
                } else {
                  d.outerRadius = radius + 10; // Set Outer Coordinate
                  d.innerRadius = radius + 15; // Set Inner Coordinate
                  return 'translate(' + labelsArc.centroid(d) + ')'
                }
            });

          slices.each(function(d, i) {
            var slice = d3.select(this);

            slice
              .select(".nv-label text")
                .style('text-anchor', labelSunbeamLayout ? ((d.startAngle + d.endAngle) / 2 < Math.PI ? 'start' : 'end') : 'middle') //center the text on it's origin or begin/end if orthogonal aligned
                .text(function(d, i) {
                  var percent = (d.endAngle - d.startAngle) / (2 * Math.PI);
                  return (d.value && percent > labelThreshold) ? getX(d.data) : '';
                });

            var textBox = slice.select('text').node().getBBox();
            slice.select(".nv-label rect")
              .attr("width", textBox.width + 10)
              .attr("height", textBox.height + 10)
              .attr("transform", function() {
                return "translate(" + [textBox.x - 5, textBox.y - 5] + ")";
              });
          });
        }


        // Computes the angle of an arc, converting from radians to degrees.
        function angle(d) {
          var a = (d.startAngle + d.endAngle) * 90 / Math.PI - 90;
          return a > 90 ? a - 180 : a;
        }

        function arcTween(a) {
          if (!donut) a.innerRadius = 0;
          var i = d3.interpolate(this._current, a);
          this._current = i(0);
          return function(t) {
            return arc(i(t));
          };
        }

        function tweenPie(b) {
          b.innerRadius = 0;
          var i = d3.interpolate({startAngle: 0, endAngle: 0}, b);
          return function(t) {
              return arc(i(t));
          };
        }

    });

    return chart;
  }


  //============================================================
  // Expose Public Variables
  //------------------------------------------------------------

  chart.dispatch = dispatch;

  chart.margin = function(_) {
    if (!arguments.length) return margin;
    margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
    margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
    margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
    margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
    return chart;
  };

  chart.width = function(_) {
    if (!arguments.length) return width;
    width = _;
    return chart;
  };

  chart.height = function(_) {
    if (!arguments.length) return height;
    height = _;
    return chart;
  };

  chart.values = function(_) {
    if (!arguments.length) return getValues;
    getValues = _;
    return chart;
  };

  chart.x = function(_) {
    if (!arguments.length) return getX;
    getX = _;
    return chart;
  };

  chart.y = function(_) {
    if (!arguments.length) return getY;
    getY = d3.functor(_);
    return chart;
  };
  
  chart.description = function(_) {
    if (!arguments.length) return getDescription;
    getDescription = _;
    return chart;
  };

  chart.showLabels = function(_) {
    if (!arguments.length) return showLabels;
    showLabels = _;
    return chart;
  };
  
  chart.labelSunbeamLayout = function(_) {
    if (!arguments.length) return labelSunbeamLayout;
    labelSunbeamLayout = _;
    return chart;
  };

  chart.donutLabelsOutside = function(_) {
    if (!arguments.length) return donutLabelsOutside;
    donutLabelsOutside = _;
    return chart;
  };
  
  chart.pieLabelsOutside = function(_) {
    if (!arguments.length) return pieLabelsOutside;
    pieLabelsOutside = _;
    return chart;
  };

  chart.donut = function(_) {
    if (!arguments.length) return donut;
    donut = _;
    return chart;
  };
  
  chart.donutRatio = function(_) {
    if (!arguments.length) return donutRatio;
    donutRatio = _;
    return chart;
  };

  chart.startAngle = function(_) {
    if (!arguments.length) return startAngle;
    startAngle = _;
    return chart;
  };

  chart.endAngle = function(_) {
    if (!arguments.length) return endAngle;
    endAngle = _;
    return chart;
  };

  chart.id = function(_) {
    if (!arguments.length) return id;
    id = _;
    return chart;
  };

  chart.color = function(_) {
    if (!arguments.length) return color;
    color = nv.utils.getColor(_);
    return chart;
  };

  chart.valueFormat = function(_) {
    if (!arguments.length) return valueFormat;
    valueFormat = _;
    return chart;
  };

  chart.labelThreshold = function(_) {
    if (!arguments.length) return labelThreshold;
    labelThreshold = _;
    return chart;
  };
  //============================================================


  return chart;
}
nv.models.pieChart = function() {

  //============================================================
  // Public Variables with Default Settings
  //------------------------------------------------------------

  var pie = nv.models.pie()
    , legend = nv.models.legend()
    ;

  var margin = {top: 30, right: 20, bottom: 20, left: 20}
    , width = null
    , height = null
    , showLegend = true
    , color = nv.utils.defaultColor()
    , tooltips = true
    , tooltip = function(key, y, e, graph) {
        return '<h3>' + key + '</h3>' +
               '<p>' +  y + '</p>'
      }
    , state = {}
    , defaultState = null
    , noData = "No Data Available."
    , dispatch = d3.dispatch('tooltipShow', 'tooltipHide', 'stateChange', 'changeState')
    ;

  //============================================================


  //============================================================
  // Private Variables
  //------------------------------------------------------------

  var showTooltip = function(e, offsetElement) {
    var tooltipLabel = pie.description()(e.point) || pie.x()(e.point)
    var left = e.pos[0] + ( (offsetElement && offsetElement.offsetLeft) || 0 ),
        top = e.pos[1] + ( (offsetElement && offsetElement.offsetTop) || 0),
        y = pie.valueFormat()(pie.y()(e.point)),
        content = tooltip(tooltipLabel, y, e, chart);

    nv.tooltip.show([left, top], content, e.value < 0 ? 'n' : 's', null, offsetElement);
  };

  //============================================================


  function chart(selection) {
    selection.each(function(data) {
      var container = d3.select(this),
          that = this;

      var availableWidth = (width || parseInt(container.style('width')) || 960)
                             - margin.left - margin.right,
          availableHeight = (height || parseInt(container.style('height')) || 400)
                             - margin.top - margin.bottom;

      chart.update = function() { chart(selection); };
      chart.container = this;

      //set state.disabled
      state.disabled = data[0].map(function(d) { return !!d.disabled });

      if (!defaultState) {
        var key;
        defaultState = {};
        for (key in state) {
          if (state[key] instanceof Array)
            defaultState[key] = state[key].slice(0);
          else
            defaultState[key] = state[key];
        }
      }

      //------------------------------------------------------------
      // Display No Data message if there's nothing to show.

      if (!data[0] || !data[0].length) {
        var noDataText = container.selectAll('.nv-noData').data([noData]);

        noDataText.enter().append('text')
          .attr('class', 'nvd3 nv-noData')
          .attr('dy', '-.7em')
          .style('text-anchor', 'middle');

        noDataText
          .attr('x', margin.left + availableWidth / 2)
          .attr('y', margin.top + availableHeight / 2)
          .text(function(d) { return d });

        return chart;
      } else {
        container.selectAll('.nv-noData').remove();
      }

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup containers and skeleton of chart

      var wrap = container.selectAll('g.nv-wrap.nv-pieChart').data([data]);
      var gEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-pieChart').append('g');
      var g = wrap.select('g');

      gEnter.append('g').attr('class', 'nv-pieWrap');
      gEnter.append('g').attr('class', 'nv-legendWrap');

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Legend

      if (showLegend) {
        legend
          .width( availableWidth )
          .key(pie.x());

        wrap.select('.nv-legendWrap')
            .datum(pie.values()(data[0]))
            .call(legend);

        if ( margin.top != legend.height()) {
          margin.top = legend.height();
          availableHeight = (height || parseInt(container.style('height')) || 400)
                             - margin.top - margin.bottom;
        }

        wrap.select('.nv-legendWrap')
            .attr('transform', 'translate(0,' + (-margin.top) +')');
      }

      //------------------------------------------------------------


      wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');


      //------------------------------------------------------------
      // Main Chart Component(s)

      pie
        .width(availableWidth)
        .height(availableHeight);


      var pieWrap = g.select('.nv-pieWrap')
          .datum(data);

      d3.transition(pieWrap).call(pie);

      //------------------------------------------------------------


      //============================================================
      // Event Handling/Dispatching (in chart's scope)
      //------------------------------------------------------------

      legend.dispatch.on('legendClick', function(d,i, that) {
        d.disabled = !d.disabled;

        if (!pie.values()(data[0]).filter(function(d) { return !d.disabled }).length) {
          pie.values()(data[0]).map(function(d) {
            d.disabled = false;
            wrap.selectAll('.nv-series').classed('disabled', false);
            return d;
          });
        }

        state.disabled = data[0].map(function(d) { return !!d.disabled });
        dispatch.stateChange(state);

        selection.transition().call(chart)
      });

      pie.dispatch.on('elementMouseout.tooltip', function(e) {
        dispatch.tooltipHide(e);
      });

      // Update chart from a state object passed to event handler
      dispatch.on('changeState', function(e) {

        if (typeof e.disabled !== 'undefined') {
          data[0].forEach(function(series,i) {
            series.disabled = e.disabled[i];
          });

          state.disabled = e.disabled;
        }

        selection.call(chart);
      });

      //============================================================


    });

    return chart;
  }

  //============================================================
  // Event Handling/Dispatching (out of chart's scope)
  //------------------------------------------------------------

  pie.dispatch.on('elementMouseover.tooltip', function(e) {
    e.pos = [e.pos[0] +  margin.left, e.pos[1] + margin.top];
    dispatch.tooltipShow(e);
  });

  dispatch.on('tooltipShow', function(e) {
    if (tooltips) showTooltip(e);
  });

  dispatch.on('tooltipHide', function() {
    if (tooltips) nv.tooltip.cleanup();
  });

  //============================================================


  //============================================================
  // Expose Public Variables
  //------------------------------------------------------------

  // expose chart's sub-components
  chart.legend = legend;
  chart.dispatch = dispatch;
  chart.pie = pie;

  d3.rebind(chart, pie, 'valueFormat', 'values', 'x', 'y', 'description', 'id', 'showLabels', 'donutLabelsOutside', 'pieLabelsOutside', 'donut', 'donutRatio', 'labelThreshold');

  chart.margin = function(_) {
    if (!arguments.length) return margin;
    margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
    margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
    margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
    margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
    return chart;
  };

  chart.width = function(_) {
    if (!arguments.length) return width;
    width = _;
    return chart;
  };

  chart.height = function(_) {
    if (!arguments.length) return height;
    height = _;
    return chart;
  };

  chart.color = function(_) {
    if (!arguments.length) return color;
    color = nv.utils.getColor(_);
    legend.color(color);
    pie.color(color);
    return chart;
  };

  chart.showLegend = function(_) {
    if (!arguments.length) return showLegend;
    showLegend = _;
    return chart;
  };

  chart.tooltips = function(_) {
    if (!arguments.length) return tooltips;
    tooltips = _;
    return chart;
  };

  chart.tooltipContent = function(_) {
    if (!arguments.length) return tooltip;
    tooltip = _;
    return chart;
  };

  chart.state = function(_) {
    if (!arguments.length) return state;
    state = _;
    return chart;
  };

  chart.defaultState = function(_) {
    if (!arguments.length) return defaultState;
    defaultState = _;
    return chart;
  };

  chart.noData = function(_) {
    if (!arguments.length) return noData;
    noData = _;
    return chart;
  };

  //============================================================


  return chart;
}

nv.models.scatter = function() {

  //============================================================
  // Public Variables with Default Settings
  //------------------------------------------------------------

  var margin       = {top: 0, right: 0, bottom: 0, left: 0}
    , width        = 960
    , height       = 500
    , color        = nv.utils.defaultColor() // chooses color
    , id           = Math.floor(Math.random() * 100000) //Create semi-unique ID incase user doesn't select one
    , x            = d3.scale.linear()
    , y            = d3.scale.linear()
    , z            = d3.scale.linear() //linear because d3.svg.shape.size is treated as area
    , getX         = function(d) { return d.x } // accessor to get the x value
    , getY         = function(d) { return d.y } // accessor to get the y value
    , getSize      = function(d) { return d.size || 1} // accessor to get the point size
    , getShape     = function(d) { return d.shape || 'circle' } // accessor to get point shape
    , onlyCircles  = true // Set to false to use shapes
    , forceX       = [] // List of numbers to Force into the X scale (ie. 0, or a max / min, etc.)
    , forceY       = [] // List of numbers to Force into the Y scale
    , forceSize    = [] // List of numbers to Force into the Size scale
    , interactive  = true // If true, plots a voronoi overlay for advanced point intersection
    , pointActive  = function(d) { return !d.notActive } // any points that return false will be filtered out
    , padData      = false // If true, adds half a data points width to front and back, for lining up a line chart with a bar chart
    , padDataOuter = .1 //outerPadding to imitate ordinal scale outer padding
    , clipEdge     = false // if true, masks points within x and y scale
    , clipVoronoi  = true // if true, masks each point with a circle... can turn off to slightly increase performance
    , clipRadius   = function() { return 25 } // function to get the radius for voronoi point clips
    , xDomain      = null // Override x domain (skips the calculation from data)
    , yDomain      = null // Override y domain
    , sizeDomain   = null // Override point size domain
    , sizeRange    = null
    , singlePoint  = false
    , dispatch     = d3.dispatch('elementClick', 'elementMouseover', 'elementMouseout')
    , useVoronoi   = true
    ;

  //============================================================


  //============================================================
  // Private Variables
  //------------------------------------------------------------

  var x0, y0, z0 // used to store previous scales
    , timeoutID
    , needsUpdate = false // Flag for when the points are visually updating, but the interactive layer is behind, to disable tooltips
    ;

  //============================================================


  function chart(selection) {
    selection.each(function(data) {
      var availableWidth = width - margin.left - margin.right,
          availableHeight = height - margin.top - margin.bottom,
          container = d3.select(this);

      //add series index to each data point for reference
      data = data.map(function(series, i) {
        series.values = series.values.map(function(point) {
          point.series = i;
          return point;
        });
        return series;
      });

      //------------------------------------------------------------
      // Setup Scales

      // remap and flatten the data for use in calculating the scales' domains
      var seriesData = (xDomain && yDomain && sizeDomain) ? [] : // if we know xDomain and yDomain and sizeDomain, no need to calculate.... if Size is constant remember to set sizeDomain to speed up performance
            d3.merge(
              data.map(function(d) {
                return d.values.map(function(d,i) {
                  return { x: getX(d,i), y: getY(d,i), size: getSize(d,i) }
                })
              })
            );

      x   .domain(xDomain || d3.extent(seriesData.map(function(d) { return d.x }).concat(forceX)))

      if (padData && data[0])
        x.range([(availableWidth * padDataOuter +  availableWidth) / (2 *data[0].values.length), availableWidth - availableWidth * (1 + padDataOuter) / (2 * data[0].values.length)  ]);
        //x.range([availableWidth * .5 / data[0].values.length, availableWidth * (data[0].values.length - .5)  / data[0].values.length ]);
      else
        x.range([0, availableWidth]);

      y   .domain(yDomain || d3.extent(seriesData.map(function(d) { return d.y }).concat(forceY)))
          .range([availableHeight, 0]);

      z   .domain(sizeDomain || d3.extent(seriesData.map(function(d) { return d.size }).concat(forceSize)))
          .range(sizeRange || [16, 256]);

      // If scale's domain don't have a range, slightly adjust to make one... so a chart can show a single data point
      if (x.domain()[0] === x.domain()[1] || y.domain()[0] === y.domain()[1]) singlePoint = true;
      if (x.domain()[0] === x.domain()[1])
        x.domain()[0] ?
            x.domain([x.domain()[0] - x.domain()[0] * 0.01, x.domain()[1] + x.domain()[1] * 0.01])
          : x.domain([-1,1]);

      if (y.domain()[0] === y.domain()[1])
        y.domain()[0] ?
            y.domain([y.domain()[0] + y.domain()[0] * 0.01, y.domain()[1] - y.domain()[1] * 0.01])
          : y.domain([-1,1]);


      x0 = x0 || x;
      y0 = y0 || y;
      z0 = z0 || z;

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup containers and skeleton of chart

      var wrap = container.selectAll('g.nv-wrap.nv-scatter').data([data]);
      var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-scatter nv-chart-' + id + (singlePoint ? ' nv-single-point' : ''));
      var defsEnter = wrapEnter.append('defs');
      var gEnter = wrapEnter.append('g');
      var g = wrap.select('g');

      gEnter.append('g').attr('class', 'nv-groups');
      gEnter.append('g').attr('class', 'nv-point-paths');

      wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');

      //------------------------------------------------------------


      defsEnter.append('clipPath')
          .attr('id', 'nv-edge-clip-' + id)
        .append('rect');

      wrap.select('#nv-edge-clip-' + id + ' rect')
          .attr('width', availableWidth)
          .attr('height', availableHeight);

      g   .attr('clip-path', clipEdge ? 'url(#nv-edge-clip-' + id + ')' : '');


      function updateInteractiveLayer() {

        if (!interactive) return false;

        var eventElements;

        var vertices = d3.merge(data.map(function(group, groupIndex) {
            return group.values
              .map(function(point, pointIndex) {
                // *Adding noise to make duplicates very unlikely
                // **Injecting series and point index for reference
                return [x(getX(point,pointIndex)) * (Math.random() / 1e12 + 1)  , y(getY(point,pointIndex)) * (Math.random() / 1e12 + 1), groupIndex, pointIndex, point]; //temp hack to add noise untill I think of a better way so there are no duplicates
              })
              .filter(function(pointArray, pointIndex) {
                return pointActive(pointArray[4], pointIndex); // Issue #237.. move filter to after map, so pointIndex is correct!
              })
          })
        );



        //inject series and point index for reference into voronoi
        if (useVoronoi === true) {

          if (clipVoronoi) {
            var pointClipsEnter = wrap.select('defs').selectAll('.nv-point-clips')
                .data([id])
              .enter();

            pointClipsEnter.append('clipPath')
                  .attr('class', 'nv-point-clips')
                  .attr('id', 'nv-points-clip-' + id);

            var pointClips = wrap.select('#nv-points-clip-' + id).selectAll('circle')
                .data(vertices);
            pointClips.enter().append('circle')
                .attr('r', clipRadius);
            pointClips.exit().remove();
            pointClips
                .attr('cx', function(d) { return d[0] })
                .attr('cy', function(d) { return d[1] });

            wrap.select('.nv-point-paths')
                .attr('clip-path', 'url(#nv-points-clip-' + id + ')');
          }


          // if(vertices.length < 3) {
            // Issue #283 - Adding 2 dummy points to the voronoi b/c voronoi requires min 3 points to work
            vertices.push([x.range()[0] - 20, y.range()[0] - 20, null, null]);
            vertices.push([x.range()[1] + 20, y.range()[1] + 20, null, null]);
            vertices.push([x.range()[0] - 20, y.range()[0] + 20, null, null]);
            vertices.push([x.range()[1] + 20, y.range()[1] - 20, null, null]);
          // }

          var bounds = d3.geom.polygon([
              [-10,-10],
              [-10,height + 10],
              [width + 10,height + 10],
              [width + 10,-10]
          ]);

          var voronoi = d3.geom.voronoi(vertices).map(function(d, i) {
              return {
                'data': bounds.clip(d),
                'series': vertices[i][2],
                'point': vertices[i][3]
              }
            });



          var pointPaths = wrap.select('.nv-point-paths').selectAll('path')
              .data(voronoi);
          pointPaths.enter().append('path')
              .attr('class', function(d,i) { return 'nv-path-'+i; });
          pointPaths.exit().remove();
          pointPaths
              .attr('d', function(d) { return 'M' + d.data.join('L') + 'Z'; });

          pointPaths
              .on('click', function(d) {
                if (needsUpdate) return 0;
                var series = data[d.series],
                    point  = series.values[d.point];

                dispatch.elementClick({
                  point: point,
                  series: series,
                  pos: [x(getX(point, d.point)) + margin.left, y(getY(point, d.point)) + margin.top],
                  seriesIndex: d.series,
                  pointIndex: d.point
                });
              })
              .on('mouseover', function(d) {
                if (needsUpdate) return 0;
                var series = data[d.series],
                    point  = series.values[d.point];

                dispatch.elementMouseover({
                  point: point,
                  series: series,
                  pos: [x(getX(point, d.point)) + margin.left, y(getY(point, d.point)) + margin.top],
                  seriesIndex: d.series,
                  pointIndex: d.point
                });
              })
              .on('mouseout', function(d, i) {
                if (needsUpdate) return 0;
                var series = data[d.series],
                    point  = series.values[d.point];

                dispatch.elementMouseout({
                  point: point,
                  series: series,
                  seriesIndex: d.series,
                  pointIndex: d.point
                });
              });


        } else {
          /*
          // bring data in form needed for click handlers
          var dataWithPoints = vertices.map(function(d, i) {
              return {
                'data': d,
                'series': vertices[i][2],
                'point': vertices[i][3]
              }
            });
           */

          // add event handlers to points instead voronoi paths
          wrap.select('.nv-groups').selectAll('.nv-group')
            .selectAll('.nv-point')
              //.data(dataWithPoints)
              //.style('pointer-events', 'auto') // recativate events, disabled by css
              .on('click', function(d,i) { 
                //nv.log('test', d, i);
                if (needsUpdate || !data[d.series]) return 0; //check if this is a dummy point
                var series = data[d.series],
                    point  = series.values[i];

                dispatch.elementClick({
                  point: point,
                  series: series,
                  pos: [x(getX(point, i)) + margin.left, y(getY(point, i)) + margin.top],
                  seriesIndex: d.series,
                  pointIndex: i
                });
              })
              .on('mouseover', function(d,i) {
                if (needsUpdate || !data[d.series]) return 0; //check if this is a dummy point
                var series = data[d.series],
                    point  = series.values[i];

                dispatch.elementMouseover({
                  point: point,
                  series: series,
                  pos: [x(getX(point, i)) + margin.left, y(getY(point, i)) + margin.top],
                  seriesIndex: d.series,
                  pointIndex: i
                });
              })
              .on('mouseout', function(d,i) {
                if (needsUpdate || !data[d.series]) return 0; //check if this is a dummy point
                var series = data[d.series],
                    point  = series.values[i];

                dispatch.elementMouseout({
                  point: point,
                  series: series,
                  seriesIndex: d.series,
                  pointIndex: i
                });
              });
          }

          needsUpdate = false;
      }

      needsUpdate = true;

      var groups = wrap.select('.nv-groups').selectAll('.nv-group')
          .data(function(d) { return d }, function(d) { return d.key });
      groups.enter().append('g')
          .style('stroke-opacity', 1e-6)
          .style('fill-opacity', 1e-6);
      d3.transition(groups.exit())
          .style('stroke-opacity', 1e-6)
          .style('fill-opacity', 1e-6)
          .remove();
      groups
          .attr('class', function(d,i) { return 'nv-group nv-series-' + i })
          .classed('hover', function(d) { return d.hover });
      d3.transition(groups)
          .style('fill', function(d,i) { return color(d, i) })
          .style('stroke', function(d,i) { return color(d, i) })
          .style('stroke-opacity', 1)
          .style('fill-opacity', .5);


      if (onlyCircles) {

        var points = groups.selectAll('circle.nv-point')
            .data(function(d) { return d.values });
        points.enter().append('circle')
            .attr('cx', function(d,i) { return x0(getX(d,i)) })
            .attr('cy', function(d,i) { return y0(getY(d,i)) })
            .attr('r', function(d,i) { return Math.sqrt(z(getSize(d,i))/Math.PI) });
        points.exit().remove();
        d3.transition(groups.exit().selectAll('path.nv-point'))
            .attr('cx', function(d,i) { return x(getX(d,i)) })
            .attr('cy', function(d,i) { return y(getY(d,i)) })
            .remove();
        points.attr('class', function(d,i) { return 'nv-point nv-point-' + i });
        d3.transition(points)
            .attr('cx', function(d,i) { return x(getX(d,i)) })
            .attr('cy', function(d,i) { return y(getY(d,i)) })
            .attr('r', function(d,i) { return Math.sqrt(z(getSize(d,i))/Math.PI) });

      } else {

        var points = groups.selectAll('path.nv-point')
            .data(function(d) { return d.values });
        points.enter().append('path')
            .attr('transform', function(d,i) {
              return 'translate(' + x0(getX(d,i)) + ',' + y0(getY(d,i)) + ')'
            })
            .attr('d',
              d3.svg.symbol()
                .type(getShape)
                .size(function(d,i) { return z(getSize(d,i)) })
            );
        points.exit().remove();
        d3.transition(groups.exit().selectAll('path.nv-point'))
            .attr('transform', function(d,i) {
              return 'translate(' + x(getX(d,i)) + ',' + y(getY(d,i)) + ')'
            })
            .remove();
        points.attr('class', function(d,i) { return 'nv-point nv-point-' + i });
        d3.transition(points)
            .attr('transform', function(d,i) {
              //nv.log(d,i,getX(d,i), x(getX(d,i)));
              return 'translate(' + x(getX(d,i)) + ',' + y(getY(d,i)) + ')'
            })
            .attr('d',
              d3.svg.symbol()
                .type(getShape)
                .size(function(d,i) { return z(getSize(d,i)) })
            );
      }


      // Delay updating the invisible interactive layer for smoother animation
      clearTimeout(timeoutID); // stop repeat calls to updateInteractiveLayer
      timeoutID = setTimeout(updateInteractiveLayer, 300);
      //updateInteractiveLayer();

      //store old scales for use in transitions on update
      x0 = x.copy();
      y0 = y.copy();
      z0 = z.copy();

    });

    return chart;
  }


  //============================================================
  // Event Handling/Dispatching (out of chart's scope)
  //------------------------------------------------------------

  dispatch.on('elementMouseover.point', function(d) {
    if (interactive)
      d3.select('.nv-chart-' + id + ' .nv-series-' + d.seriesIndex + ' .nv-point-' + d.pointIndex)
          .classed('hover', true);
  });

  dispatch.on('elementMouseout.point', function(d) {
    if (interactive)
      d3.select('.nv-chart-' + id + ' .nv-series-' + d.seriesIndex + ' .nv-point-' + d.pointIndex)
          .classed('hover', false);
  });

  //============================================================


  //============================================================
  // Expose Public Variables
  //------------------------------------------------------------

  chart.dispatch = dispatch;

  chart.x = function(_) {
    if (!arguments.length) return getX;
    getX = d3.functor(_);
    return chart;
  };

  chart.y = function(_) {
    if (!arguments.length) return getY;
    getY = d3.functor(_);
    return chart;
  };

  chart.size = function(_) {
    if (!arguments.length) return getSize;
    getSize = d3.functor(_);
    return chart;
  };

  chart.margin = function(_) {
    if (!arguments.length) return margin;
    margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
    margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
    margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
    margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
    return chart;
  };

  chart.width = function(_) {
    if (!arguments.length) return width;
    width = _;
    return chart;
  };

  chart.height = function(_) {
    if (!arguments.length) return height;
    height = _;
    return chart;
  };

  chart.xScale = function(_) {
    if (!arguments.length) return x;
    x = _;
    return chart;
  };

  chart.yScale = function(_) {
    if (!arguments.length) return y;
    y = _;
    return chart;
  };

  chart.zScale = function(_) {
    if (!arguments.length) return z;
    z = _;
    return chart;
  };

  chart.xDomain = function(_) {
    if (!arguments.length) return xDomain;
    xDomain = _;
    return chart;
  };

  chart.yDomain = function(_) {
    if (!arguments.length) return yDomain;
    yDomain = _;
    return chart;
  };

  chart.sizeDomain = function(_) {
    if (!arguments.length) return sizeDomain;
    sizeDomain = _;
    return chart;
  };

  chart.sizeRange = function(_) {
    if (!arguments.length) return sizeRange;
    sizeRange = _;
    return chart;
  };

  chart.forceX = function(_) {
    if (!arguments.length) return forceX;
    forceX = _;
    return chart;
  };

  chart.forceY = function(_) {
    if (!arguments.length) return forceY;
    forceY = _;
    return chart;
  };

  chart.forceSize = function(_) {
    if (!arguments.length) return forceSize;
    forceSize = _;
    return chart;
  };

  chart.interactive = function(_) {
    if (!arguments.length) return interactive;
    interactive = _;
    return chart;
  };

  chart.pointActive = function(_) {
    if (!arguments.length) return pointActive;
    pointActive = _;
    return chart;
  };

  chart.padData = function(_) {
    if (!arguments.length) return padData;
    padData = _;
    return chart;
  };

  chart.padDataOuter = function(_) {
    if (!arguments.length) return padDataOuter;
    padDataOuter = _;
    return chart;
  };

  chart.clipEdge = function(_) {
    if (!arguments.length) return clipEdge;
    clipEdge = _;
    return chart;
  };

  chart.clipVoronoi= function(_) {
    if (!arguments.length) return clipVoronoi;
    clipVoronoi = _;
    return chart;
  };

  chart.useVoronoi= function(_) {
    if (!arguments.length) return useVoronoi;
    useVoronoi = _;
    if (useVoronoi === false) {
        clipVoronoi = false;
    }
    return chart;
  };

  chart.clipRadius = function(_) {
    if (!arguments.length) return clipRadius;
    clipRadius = _;
    return chart;
  };

  chart.color = function(_) {
    if (!arguments.length) return color;
    color = nv.utils.getColor(_);
    return chart;
  };

  chart.shape = function(_) {
    if (!arguments.length) return getShape;
    getShape = _;
    return chart;
  };

  chart.onlyCircles = function(_) {
    if (!arguments.length) return onlyCircles;
    onlyCircles = _;
    return chart;
  };

  chart.id = function(_) {
    if (!arguments.length) return id;
    id = _;
    return chart;
  };

  chart.singlePoint = function(_) {
    if (!arguments.length) return singlePoint;
    singlePoint = _;
    return chart;
  };

  //============================================================


  return chart;
}

nv.models.scatterChart = function() {

  //============================================================
  // Public Variables with Default Settings
  //------------------------------------------------------------

  var scatter      = nv.models.scatter()
    , xAxis        = nv.models.axis()
    , yAxis        = nv.models.axis()
    , legend       = nv.models.legend()
    , controls     = nv.models.legend()
    , distX        = nv.models.distribution()
    , distY        = nv.models.distribution()
    ;

  var margin       = {top: 30, right: 20, bottom: 50, left: 75}
    , width        = null
    , height       = null
    , color        = nv.utils.defaultColor()
    , x            = d3.fisheye ? d3.fisheye.scale(d3.scale.linear).distortion(0) : scatter.xScale()
    , y            = d3.fisheye ? d3.fisheye.scale(d3.scale.linear).distortion(0) : scatter.yScale()
    , xPadding     = 0
    , yPadding     = 0
    , showDistX    = false
    , showDistY    = false
    , showLegend   = true
    , showControls = !!d3.fisheye
    , fisheye      = 0
    , pauseFisheye = false
    , tooltips     = true
    , tooltipX     = function(key, x, y) { return '<strong>' + x + '</strong>' }
    , tooltipY     = function(key, x, y) { return '<strong>' + y + '</strong>' }
    //, tooltip      = function(key, x, y) { return '<h3>' + key + '</h3>' }
    , tooltip      = null
    , state = {}
    , defaultState = null
    , dispatch     = d3.dispatch('tooltipShow', 'tooltipHide', 'stateChange', 'changeState')
    , noData       = "No Data Available."
    ;

  scatter
    .xScale(x)
    .yScale(y)
    ;
  xAxis
    .orient('bottom')
    .tickPadding(10)
    ;
  yAxis
    .orient('left')
    .tickPadding(10)
    ;
  distX
    .axis('x')
    ;
  distY
    .axis('y')
    ;

  //============================================================


  //============================================================
  // Private Variables
  //------------------------------------------------------------

  var x0, y0;

  var showTooltip = function(e, offsetElement) {
    //TODO: make tooltip style an option between single or dual on axes (maybe on all charts with axes?)

    var left = e.pos[0] + ( offsetElement.offsetLeft || 0 ),
        top = e.pos[1] + ( offsetElement.offsetTop || 0),
        leftX = e.pos[0] + ( offsetElement.offsetLeft || 0 ),
        topX = y.range()[0] + margin.top + ( offsetElement.offsetTop || 0),
        leftY = x.range()[0] + margin.left + ( offsetElement.offsetLeft || 0 ),
        topY = e.pos[1] + ( offsetElement.offsetTop || 0),
        xVal = xAxis.tickFormat()(scatter.x()(e.point, e.pointIndex)),
        yVal = yAxis.tickFormat()(scatter.y()(e.point, e.pointIndex));

      if( tooltipX != null )
          nv.tooltip.show([leftX, topX], tooltipX(e.series.key, xVal, yVal, e, chart), 'n', 1, offsetElement, 'x-nvtooltip');
      if( tooltipY != null )
          nv.tooltip.show([leftY, topY], tooltipY(e.series.key, xVal, yVal, e, chart), 'e', 1, offsetElement, 'y-nvtooltip');
      if( tooltip != null )
          nv.tooltip.show([left, top], tooltip(e.series.key, xVal, yVal, e, chart), e.value < 0 ? 'n' : 's', null, offsetElement);
  };

  var controlsData = [
    { key: 'Magnify', disabled: true }
  ];

  //============================================================


  function chart(selection) {
    selection.each(function(data) {
      var container = d3.select(this),
          that = this;

      var availableWidth = (width  || parseInt(container.style('width')) || 960)
                             - margin.left - margin.right,
          availableHeight = (height || parseInt(container.style('height')) || 400)
                             - margin.top - margin.bottom;

      chart.update = function() { chart(selection) };
      chart.container = this;

      //set state.disabled
      state.disabled = data.map(function(d) { return !!d.disabled });

      if (!defaultState) {
        var key;
        defaultState = {};
        for (key in state) {
          if (state[key] instanceof Array)
            defaultState[key] = state[key].slice(0);
          else
            defaultState[key] = state[key];
        }
      }

      //------------------------------------------------------------
      // Display noData message if there's nothing to show.

      if (!data || !data.length || !data.filter(function(d) { return d.values.length }).length) {
        var noDataText = container.selectAll('.nv-noData').data([noData]);

        noDataText.enter().append('text')
          .attr('class', 'nvd3 nv-noData')
          .attr('dy', '-.7em')
          .style('text-anchor', 'middle');

        noDataText
          .attr('x', margin.left + availableWidth / 2)
          .attr('y', margin.top + availableHeight / 2)
          .text(function(d) { return d });

        return chart;
      } else {
        container.selectAll('.nv-noData').remove();
      }

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup Scales

      x0 = x0 || x;
      y0 = y0 || y;

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup containers and skeleton of chart

      var wrap = container.selectAll('g.nv-wrap.nv-scatterChart').data([data]);
      var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-scatterChart nv-chart-' + scatter.id());
      var gEnter = wrapEnter.append('g');
      var g = wrap.select('g');

      // background for pointer events
      gEnter.append('rect').attr('class', 'nvd3 nv-background');

      gEnter.append('g').attr('class', 'nv-x nv-axis');
      gEnter.append('g').attr('class', 'nv-y nv-axis');
      gEnter.append('g').attr('class', 'nv-scatterWrap');
      gEnter.append('g').attr('class', 'nv-distWrap');
      gEnter.append('g').attr('class', 'nv-legendWrap');
      gEnter.append('g').attr('class', 'nv-controlsWrap');

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Legend

      if (showLegend) {
        legend.width( availableWidth / 2 );

        wrap.select('.nv-legendWrap')
            .datum(data)
            .call(legend);

        if ( margin.top != legend.height()) {
          margin.top = legend.height();
          availableHeight = (height || parseInt(container.style('height')) || 400)
                             - margin.top - margin.bottom;
        }

        wrap.select('.nv-legendWrap')
            .attr('transform', 'translate(' + (availableWidth / 2) + ',' + (-margin.top) +')');
      }

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Controls

      if (showControls) {
        controls.width(180).color(['#444']);
        g.select('.nv-controlsWrap')
            .datum(controlsData)
            .attr('transform', 'translate(0,' + (-margin.top) +')')
            .call(controls);
      }

      //------------------------------------------------------------


      wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');


      //------------------------------------------------------------
      // Main Chart Component(s)

      scatter
          .width(availableWidth)
          .height(availableHeight)
          .color(data.map(function(d,i) {
            return d.color || color(d, i);
          }).filter(function(d,i) { return !data[i].disabled }))

      wrap.select('.nv-scatterWrap')
          .datum(data.filter(function(d) { return !d.disabled }))
          .call(scatter);


      //Adjust for x and y padding
      if (xPadding) {
        var xRange = x.domain()[1] - x.domain()[0];
        x.domain([x.domain()[0] - (xPadding * xRange), x.domain()[1] + (xPadding * xRange)]);
      }

      if (yPadding) {
        var yRange = y.domain()[1] - y.domain()[0];
        y.domain([y.domain()[0] - (yPadding * yRange), y.domain()[1] + (yPadding * yRange)]);
      }

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup Axes

      xAxis
          .scale(x)
          .ticks( xAxis.ticks() && xAxis.ticks().length ? xAxis.ticks() : availableWidth / 100 )
          .tickSize( -availableHeight , 0);

      g.select('.nv-x.nv-axis')
          .attr('transform', 'translate(0,' + y.range()[0] + ')')
          .call(xAxis);


      yAxis
          .scale(y)
          .ticks( yAxis.ticks() && yAxis.ticks().length ? yAxis.ticks() : availableHeight / 36 )
          .tickSize( -availableWidth, 0);

      g.select('.nv-y.nv-axis')
          .call(yAxis);


      if (showDistX) {
        distX
            .getData(scatter.x())
            .scale(x)
            .width(availableWidth)
            .color(data.map(function(d,i) {
              return d.color || color(d, i);
            }).filter(function(d,i) { return !data[i].disabled }));
        gEnter.select('.nv-distWrap').append('g')
            .attr('class', 'nv-distributionX');
        g.select('.nv-distributionX')
            .attr('transform', 'translate(0,' + y.range()[0] + ')')
            .datum(data.filter(function(d) { return !d.disabled }))
            .call(distX);
      }

      if (showDistY) {
        distY
            .getData(scatter.y())
            .scale(y)
            .width(availableHeight)
            .color(data.map(function(d,i) {
              return d.color || color(d, i);
            }).filter(function(d,i) { return !data[i].disabled }));
        gEnter.select('.nv-distWrap').append('g')
            .attr('class', 'nv-distributionY');
        g.select('.nv-distributionY')
            .attr('transform', 'translate(-' + distY.size() + ',0)')
            .datum(data.filter(function(d) { return !d.disabled }))
            .call(distY);
      }

      //------------------------------------------------------------




      if (d3.fisheye) {
        g.select('.nv-background')
            .attr('width', availableWidth)
            .attr('height', availableHeight);

        g.select('.nv-background').on('mousemove', updateFisheye);
        g.select('.nv-background').on('click', function() { pauseFisheye = !pauseFisheye;});
        scatter.dispatch.on('elementClick.freezeFisheye', function() {
          pauseFisheye = !pauseFisheye;
        });
      }


      function updateFisheye() {
        if (pauseFisheye) {
          g.select('.nv-point-paths').style('pointer-events', 'all');
          return false;
        }

        g.select('.nv-point-paths').style('pointer-events', 'none' );

        var mouse = d3.mouse(this);
        x.distortion(fisheye).focus(mouse[0]);
        y.distortion(fisheye).focus(mouse[1]);

        g.select('.nv-scatterWrap')
            .call(scatter);

        g.select('.nv-x.nv-axis').call(xAxis);
        g.select('.nv-y.nv-axis').call(yAxis);
        g.select('.nv-distributionX')
            .datum(data.filter(function(d) { return !d.disabled }))
            .call(distX);
        g.select('.nv-distributionY')
            .datum(data.filter(function(d) { return !d.disabled }))
            .call(distY);
      }



      //============================================================
      // Event Handling/Dispatching (in chart's scope)
      //------------------------------------------------------------

      controls.dispatch.on('legendClick', function(d,i) {
        d.disabled = !d.disabled;

        fisheye = d.disabled ? 0 : 2.5;
        g.select('.nv-background') .style('pointer-events', d.disabled ? 'none' : 'all');
        g.select('.nv-point-paths').style('pointer-events', d.disabled ? 'all' : 'none' );

        if (d.disabled) {
          x.distortion(fisheye).focus(0);
          y.distortion(fisheye).focus(0);

          g.select('.nv-scatterWrap').call(scatter);
          g.select('.nv-x.nv-axis').call(xAxis);
          g.select('.nv-y.nv-axis').call(yAxis);
        } else {
          pauseFisheye = false;
        }

        chart(selection);
      });

      legend.dispatch.on('legendClick', function(d,i, that) {
        d.disabled = !d.disabled;

        if (!data.filter(function(d) { return !d.disabled }).length) {
          data.map(function(d) {
            d.disabled = false;
            wrap.selectAll('.nv-series').classed('disabled', false);
            return d;
          });
        }

        state.disabled = data.map(function(d) { return !!d.disabled });
        dispatch.stateChange(state);

        chart(selection);
      });

      /*
      legend.dispatch.on('legendMouseover', function(d, i) {
        d.hover = true;
        chart(selection);
      });

      legend.dispatch.on('legendMouseout', function(d, i) {
        d.hover = false;
        chart(selection);
      });
      */

      scatter.dispatch.on('elementMouseover.tooltip', function(e) {
        d3.select('.nv-chart-' + scatter.id() + ' .nv-series-' + e.seriesIndex + ' .nv-distx-' + e.pointIndex)
            .attr('y1', e.pos[1] - availableHeight);
        d3.select('.nv-chart-' + scatter.id() + ' .nv-series-' + e.seriesIndex + ' .nv-disty-' + e.pointIndex)
            .attr('x2', e.pos[0] + distX.size());

        e.pos = [e.pos[0] + margin.left, e.pos[1] + margin.top];
        dispatch.tooltipShow(e);
      });

      dispatch.on('tooltipShow', function(e) {
        if (tooltips) showTooltip(e, that.parentNode);
      });

      // Update chart from a state object passed to event handler
      dispatch.on('changeState', function(e) {

        if (typeof e.disabled !== 'undefined') {
          data.forEach(function(series,i) {
            series.disabled = e.disabled[i];
          });

          state.disabled = e.disabled;
        }

        selection.call(chart);
      });

      //============================================================


      //store old scales for use in transitions on update
      x0 = x.copy();
      y0 = y.copy();


    });

    return chart;
  }


  //============================================================
  // Event Handling/Dispatching (out of chart's scope)
  //------------------------------------------------------------

  scatter.dispatch.on('elementMouseout.tooltip', function(e) {
    dispatch.tooltipHide(e);

    d3.select('.nv-chart-' + scatter.id() + ' .nv-series-' + e.seriesIndex + ' .nv-distx-' + e.pointIndex)
        .attr('y1', 0);
    d3.select('.nv-chart-' + scatter.id() + ' .nv-series-' + e.seriesIndex + ' .nv-disty-' + e.pointIndex)
        .attr('x2', distY.size());
  });
  dispatch.on('tooltipHide', function() {
    if (tooltips) nv.tooltip.cleanup();
  });

  //============================================================


  //============================================================
  // Expose Public Variables
  //------------------------------------------------------------

  // expose chart's sub-components
  chart.dispatch = dispatch;
  chart.scatter = scatter;
  chart.legend = legend;
  chart.controls = controls;
  chart.xAxis = xAxis;
  chart.yAxis = yAxis;
  chart.distX = distX;
  chart.distY = distY;

  d3.rebind(chart, scatter, 'id', 'interactive', 'pointActive', 'x', 'y', 'shape', 'size', 'xScale', 'yScale', 'zScale', 'xDomain', 'yDomain', 'sizeDomain', 'sizeRange', 'forceX', 'forceY', 'forceSize', 'clipVoronoi', 'clipRadius', 'useVoronoi');

  chart.margin = function(_) {
    if (!arguments.length) return margin;
    margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
    margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
    margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
    margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
    return chart;
  };

  chart.width = function(_) {
    if (!arguments.length) return width;
    width = _;
    return chart;
  };

  chart.height = function(_) {
    if (!arguments.length) return height;
    height = _;
    return chart;
  };

  chart.color = function(_) {
    if (!arguments.length) return color;
    color = nv.utils.getColor(_);
    legend.color(color);
    distX.color(color);
    distY.color(color);
    return chart;
  };

  chart.showDistX = function(_) {
    if (!arguments.length) return showDistX;
    showDistX = _;
    return chart;
  };

  chart.showDistY = function(_) {
    if (!arguments.length) return showDistY;
    showDistY = _;
    return chart;
  };

  chart.showControls = function(_) {
    if (!arguments.length) return showControls;
    showControls = _;
    return chart;
  };

  chart.showLegend = function(_) {
    if (!arguments.length) return showLegend;
    showLegend = _;
    return chart;
  };

  chart.fisheye = function(_) {
    if (!arguments.length) return fisheye;
    fisheye = _;
    return chart;
  };

  chart.xPadding = function(_) {
    if (!arguments.length) return xPadding;
    xPadding = _;
    return chart;
  };

  chart.yPadding = function(_) {
    if (!arguments.length) return yPadding;
    yPadding = _;
    return chart;
  };

  chart.tooltips = function(_) {
    if (!arguments.length) return tooltips;
    tooltips = _;
    return chart;
  };

  chart.tooltipContent = function(_) {
    if (!arguments.length) return tooltip;
    tooltip = _;
    return chart;
  };

  chart.tooltipXContent = function(_) {
    if (!arguments.length) return tooltipX;
    tooltipX = _;
    return chart;
  };

  chart.tooltipYContent = function(_) {
    if (!arguments.length) return tooltipY;
    tooltipY = _;
    return chart;
  };

  chart.state = function(_) {
    if (!arguments.length) return state;
    state = _;
    return chart;
  };

  chart.defaultState = function(_) {
    if (!arguments.length) return defaultState;
    defaultState = _;
    return chart;
  };
  
  chart.noData = function(_) {
    if (!arguments.length) return noData;
    noData = _;
    return chart;
  };

  //============================================================


  return chart;
}

nv.models.scatterPlusLineChart = function() {

  //============================================================
  // Public Variables with Default Settings
  //------------------------------------------------------------

  var scatter      = nv.models.scatter()
    , xAxis        = nv.models.axis()
    , yAxis        = nv.models.axis()
    , legend       = nv.models.legend()
    , controls     = nv.models.legend()
    , distX        = nv.models.distribution()
    , distY        = nv.models.distribution()
    ;

  var margin       = {top: 30, right: 20, bottom: 50, left: 75}
    , width        = null
    , height       = null
    , color        = nv.utils.defaultColor()
    , x            = d3.fisheye ? d3.fisheye.scale(d3.scale.linear).distortion(0) : scatter.xScale()
    , y            = d3.fisheye ? d3.fisheye.scale(d3.scale.linear).distortion(0) : scatter.yScale()
    , showDistX    = false
    , showDistY    = false
    , showLegend   = true
    , showControls = !!d3.fisheye
    , fisheye      = 0
    , pauseFisheye = false
    , tooltips     = true
    , tooltipX     = function(key, x, y) { return '<strong>' + x + '</strong>' }
    , tooltipY     = function(key, x, y) { return '<strong>' + y + '</strong>' }
    , tooltip      = function(key, x, y, date) { return '<h3>' + key + '</h3>' 
                                                      + '<p>' + date + '</p>' }
    //, tooltip      = null
    , state = {}
    , defaultState = null
    , dispatch = d3.dispatch('tooltipShow', 'tooltipHide', 'stateChange', 'changeState')
    , noData       = "No Data Available."
    ;

  scatter
    .xScale(x)
    .yScale(y)
    ;
  xAxis
    .orient('bottom')
    .tickPadding(10)
    ;
  yAxis
    .orient('left')
    .tickPadding(10)
    ;
  distX
    .axis('x')
    ;
  distY
    .axis('y')
    ;

  //============================================================


  //============================================================
  // Private Variables
  //------------------------------------------------------------

  var x0, y0;

  var showTooltip = function(e, offsetElement) {
    //TODO: make tooltip style an option between single or dual on axes (maybe on all charts with axes?)

    var left = e.pos[0] + ( offsetElement.offsetLeft || 0 ),
        top = e.pos[1] + ( offsetElement.offsetTop || 0),
        leftX = e.pos[0] + ( offsetElement.offsetLeft || 0 ),
        topX = y.range()[0] + margin.top + ( offsetElement.offsetTop || 0),
        leftY = x.range()[0] + margin.left + ( offsetElement.offsetLeft || 0 ),
        topY = e.pos[1] + ( offsetElement.offsetTop || 0),
        xVal = xAxis.tickFormat()(scatter.x()(e.point, e.pointIndex)),
        yVal = yAxis.tickFormat()(scatter.y()(e.point, e.pointIndex));

      if( tooltipX != null )
          nv.tooltip.show([leftX, topX], tooltipX(e.series.key, xVal, yVal, e, chart), 'n', 1, offsetElement, 'x-nvtooltip');
      if( tooltipY != null )
          nv.tooltip.show([leftY, topY], tooltipY(e.series.key, xVal, yVal, e, chart), 'e', 1, offsetElement, 'y-nvtooltip');
      if( tooltip != null )
          nv.tooltip.show([left, top], tooltip(e.series.key, xVal, yVal, e.point.tooltip, e, chart), e.value < 0 ? 'n' : 's', null, offsetElement);
  };

  var controlsData = [
    { key: 'Magnify', disabled: true }
  ];

  //============================================================


  function chart(selection) {
    selection.each(function(data) {
      var container = d3.select(this),
          that = this;

      var availableWidth = (width  || parseInt(container.style('width')) || 960)
                             - margin.left - margin.right,
          availableHeight = (height || parseInt(container.style('height')) || 400)
                             - margin.top - margin.bottom;

      chart.update = function() { chart(selection) };
      chart.container = this;

      //set state.disabled
      state.disabled = data.map(function(d) { return !!d.disabled });

      if (!defaultState) {
        var key;
        defaultState = {};
        for (key in state) {
          if (state[key] instanceof Array)
            defaultState[key] = state[key].slice(0);
          else
            defaultState[key] = state[key];
        }
      }

      //------------------------------------------------------------
      // Display noData message if there's nothing to show.

      if (!data || !data.length || !data.filter(function(d) { return d.values.length }).length) {
        var noDataText = container.selectAll('.nv-noData').data([noData]);

        noDataText.enter().append('text')
          .attr('class', 'nvd3 nv-noData')
          .attr('dy', '-.7em')
          .style('text-anchor', 'middle');

        noDataText
          .attr('x', margin.left + availableWidth / 2)
          .attr('y', margin.top + availableHeight / 2)
          .text(function(d) { return d });

        return chart;
      } else {
        container.selectAll('.nv-noData').remove();
      }

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup Scales

      x = scatter.xScale();
      y = scatter.yScale();

      x0 = x0 || x;
      y0 = y0 || y;

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup containers and skeleton of chart

      var wrap = container.selectAll('g.nv-wrap.nv-scatterChart').data([data]);
      var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-scatterChart nv-chart-' + scatter.id());
      var gEnter = wrapEnter.append('g');
      var g = wrap.select('g')

      // background for pointer events
      gEnter.append('rect').attr('class', 'nvd3 nv-background')

      gEnter.append('g').attr('class', 'nv-x nv-axis');
      gEnter.append('g').attr('class', 'nv-y nv-axis');
      gEnter.append('g').attr('class', 'nv-scatterWrap');
      gEnter.append('g').attr('class', 'nv-regressionLinesWrap');
      gEnter.append('g').attr('class', 'nv-distWrap');
      gEnter.append('g').attr('class', 'nv-legendWrap');
      gEnter.append('g').attr('class', 'nv-controlsWrap');

      wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Legend

      if (showLegend) {
        legend.width( availableWidth / 2 );

        wrap.select('.nv-legendWrap')
            .datum(data)
            .call(legend);

        if ( margin.top != legend.height()) {
          margin.top = legend.height();
          availableHeight = (height || parseInt(container.style('height')) || 400)
                             - margin.top - margin.bottom;
        }

        wrap.select('.nv-legendWrap')
            .attr('transform', 'translate(' + (availableWidth / 2) + ',' + (-margin.top) +')');
      }

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Controls

      if (showControls) {
        controls.width(180).color(['#444']);
        g.select('.nv-controlsWrap')
            .datum(controlsData)
            .attr('transform', 'translate(0,' + (-margin.top) +')')
            .call(controls);
      }

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Main Chart Component(s)

      scatter
          .width(availableWidth)
          .height(availableHeight)
          .color(data.map(function(d,i) {
            return d.color || color(d, i);
          }).filter(function(d,i) { return !data[i].disabled }))

      wrap.select('.nv-scatterWrap')
          .datum(data.filter(function(d) { return !d.disabled }))
          .call(scatter);


      wrap.select('.nv-regressionLinesWrap')
          .attr('clip-path', 'url(#nv-edge-clip-' + scatter.id() + ')');

      var regWrap = wrap.select('.nv-regressionLinesWrap').selectAll('.nv-regLines')
                      .data(function(d) { return d });

      var reglines = regWrap.enter()
                       .append('g').attr('class', 'nv-regLines')
                       .append('line').attr('class', 'nv-regLine')
                       .style('stroke-opacity', 0);

      //d3.transition(regWrap.selectAll('.nv-regLines line'))
      regWrap.selectAll('.nv-regLines line')
          .attr('x1', x.range()[0])
          .attr('x2', x.range()[1])
          .attr('y1', function(d,i) { return y(x.domain()[0] * d.slope + d.intercept) })
          .attr('y2', function(d,i) { return y(x.domain()[1] * d.slope + d.intercept) })
          .style('stroke', function(d,i,j) { return color(d,j) })
          .style('stroke-opacity', function(d,i) {
            return (d.disabled || typeof d.slope === 'undefined' || typeof d.intercept === 'undefined') ? 0 : 1 
          });


      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup Axes

      xAxis
          .scale(x)
          .ticks( xAxis.ticks() ? xAxis.ticks() : availableWidth / 100 )
          .tickSize( -availableHeight , 0);

      g.select('.nv-x.nv-axis')
          .attr('transform', 'translate(0,' + y.range()[0] + ')')
          .call(xAxis);


      yAxis
          .scale(y)
          .ticks( yAxis.ticks() ? yAxis.ticks() : availableHeight / 36 )
          .tickSize( -availableWidth, 0);

      g.select('.nv-y.nv-axis')
          .call(yAxis);


      if (showDistX) {
        distX
            .getData(scatter.x())
            .scale(x)
            .width(availableWidth)
            .color(data.map(function(d,i) {
              return d.color || color(d, i);
            }).filter(function(d,i) { return !data[i].disabled }));
        gEnter.select('.nv-distWrap').append('g')
            .attr('class', 'nv-distributionX');
        g.select('.nv-distributionX')
            .attr('transform', 'translate(0,' + y.range()[0] + ')')
            .datum(data.filter(function(d) { return !d.disabled }))
            .call(distX);
      }

      if (showDistY) {
        distY
            .getData(scatter.y())
            .scale(y)
            .width(availableHeight)
            .color(data.map(function(d,i) {
              return d.color || color(d, i);
            }).filter(function(d,i) { return !data[i].disabled }));
        gEnter.select('.nv-distWrap').append('g')
            .attr('class', 'nv-distributionY');
        g.select('.nv-distributionY')
            .attr('transform', 'translate(-' + distY.size() + ',0)')
            .datum(data.filter(function(d) { return !d.disabled }))
            .call(distY);
      }

      //------------------------------------------------------------




      if (d3.fisheye) {
        g.select('.nv-background')
            .attr('width', availableWidth)
            .attr('height', availableHeight);

        g.select('.nv-background').on('mousemove', updateFisheye);
        g.select('.nv-background').on('click', function() { pauseFisheye = !pauseFisheye;});
        scatter.dispatch.on('elementClick.freezeFisheye', function() {
          pauseFisheye = !pauseFisheye;
        });
      }


      function updateFisheye() {
        if (pauseFisheye) {
          g.select('.nv-point-paths').style('pointer-events', 'all');
          return false;
        }

        g.select('.nv-point-paths').style('pointer-events', 'none' );

        var mouse = d3.mouse(this);
        x.distortion(fisheye).focus(mouse[0]);
        y.distortion(fisheye).focus(mouse[1]);

        g.select('.nv-scatterWrap')
            .datum(data.filter(function(d) { return !d.disabled }))
            .call(scatter);
        g.select('.nv-x.nv-axis').call(xAxis);
        g.select('.nv-y.nv-axis').call(yAxis);
        g.select('.nv-distributionX')
            .datum(data.filter(function(d) { return !d.disabled }))
            .call(distX);
        g.select('.nv-distributionY')
            .datum(data.filter(function(d) { return !d.disabled }))
            .call(distY);
      }



      //============================================================
      // Event Handling/Dispatching (in chart's scope)
      //------------------------------------------------------------

      controls.dispatch.on('legendClick', function(d,i) {
        d.disabled = !d.disabled;

        fisheye = d.disabled ? 0 : 2.5;
        g.select('.nv-background') .style('pointer-events', d.disabled ? 'none' : 'all');
        g.select('.nv-point-paths').style('pointer-events', d.disabled ? 'all' : 'none' );

        if (d.disabled) {
          x.distortion(fisheye).focus(0);
          y.distortion(fisheye).focus(0);

          g.select('.nv-scatterWrap').call(scatter);
          g.select('.nv-x.nv-axis').call(xAxis);
          g.select('.nv-y.nv-axis').call(yAxis);
        } else {
          pauseFisheye = false;
        }

        chart(selection);
      });

      legend.dispatch.on('legendClick', function(d,i, that) {
        d.disabled = !d.disabled;

        if (!data.filter(function(d) { return !d.disabled }).length) {
          data.map(function(d) {
            d.disabled = false;
            wrap.selectAll('.nv-series').classed('disabled', false);
            return d;
          });
        }

        state.disabled = data.map(function(d) { return !!d.disabled });
        dispatch.stateChange(state);

        chart(selection);
      });

      /*
      legend.dispatch.on('legendMouseover', function(d, i) {
        d.hover = true;
        chart(selection);
      });

      legend.dispatch.on('legendMouseout', function(d, i) {
        d.hover = false;
        chart(selection);
      });
      */

      scatter.dispatch.on('elementMouseover.tooltip', function(e) {
        d3.select('.nv-chart-' + scatter.id() + ' .nv-series-' + e.seriesIndex + ' .nv-distx-' + e.pointIndex)
            .attr('y1', e.pos[1] - availableHeight);
        d3.select('.nv-chart-' + scatter.id() + ' .nv-series-' + e.seriesIndex + ' .nv-disty-' + e.pointIndex)
            .attr('x2', e.pos[0] + distX.size());

        e.pos = [e.pos[0] + margin.left, e.pos[1] + margin.top];
        dispatch.tooltipShow(e);
      });

      dispatch.on('tooltipShow', function(e) {
        if (tooltips) showTooltip(e, that.parentNode);
      });

      // Update chart from a state object passed to event handler
      dispatch.on('changeState', function(e) {

        if (typeof e.disabled !== 'undefined') {
          data.forEach(function(series,i) {
            series.disabled = e.disabled[i];
          });

          state.disabled = e.disabled;
        }

        selection.call(chart);
      });

      //============================================================


      //store old scales for use in transitions on update
      x0 = x.copy();
      y0 = y.copy();


    });

    return chart;
  }


  //============================================================
  // Event Handling/Dispatching (out of chart's scope)
  //------------------------------------------------------------

  scatter.dispatch.on('elementMouseout.tooltip', function(e) {
    dispatch.tooltipHide(e);

    d3.select('.nv-chart-' + scatter.id() + ' .nv-series-' + e.seriesIndex + ' .nv-distx-' + e.pointIndex)
        .attr('y1', 0);
    d3.select('.nv-chart-' + scatter.id() + ' .nv-series-' + e.seriesIndex + ' .nv-disty-' + e.pointIndex)
        .attr('x2', distY.size());
  });
  dispatch.on('tooltipHide', function() {
    if (tooltips) nv.tooltip.cleanup();
  });

  //============================================================


  //============================================================
  // Expose Public Variables
  //------------------------------------------------------------

  // expose chart's sub-components
  chart.dispatch = dispatch;
  chart.scatter = scatter;
  chart.legend = legend;
  chart.controls = controls;
  chart.xAxis = xAxis;
  chart.yAxis = yAxis;
  chart.distX = distX;
  chart.distY = distY;

  d3.rebind(chart, scatter, 'id', 'interactive', 'pointActive', 'x', 'y', 'shape', 'size', 'xScale', 'yScale', 'zScale', 'xDomain', 'yDomain', 'sizeDomain', 'sizeRange', 'forceX', 'forceY', 'forceSize', 'clipVoronoi', 'clipRadius', 'useVoronoi');

  chart.margin = function(_) {
    if (!arguments.length) return margin;
    margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
    margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
    margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
    margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
    return chart;
  };

  chart.width = function(_) {
    if (!arguments.length) return width;
    width = _;
    return chart;
  };

  chart.height = function(_) {
    if (!arguments.length) return height;
    height = _;
    return chart;
  };

  chart.color = function(_) {
    if (!arguments.length) return color;
    color = nv.utils.getColor(_);
    legend.color(color);
    distX.color(color);
    distY.color(color);
    return chart;
  };

  chart.showDistX = function(_) {
    if (!arguments.length) return showDistX;
    showDistX = _;
    return chart;
  };

  chart.showDistY = function(_) {
    if (!arguments.length) return showDistY;
    showDistY = _;
    return chart;
  };

  chart.showControls = function(_) {
    if (!arguments.length) return showControls;
    showControls = _;
    return chart;
  };

  chart.showLegend = function(_) {
    if (!arguments.length) return showLegend;
    showLegend = _;
    return chart;
  };

  chart.fisheye = function(_) {
    if (!arguments.length) return fisheye;
    fisheye = _;
    return chart;
  };

  chart.tooltips = function(_) {
    if (!arguments.length) return tooltips;
    tooltips = _;
    return chart;
  };

  chart.tooltipContent = function(_) {
    if (!arguments.length) return tooltip;
    tooltip = _;
    return chart;
  };

  chart.tooltipXContent = function(_) {
    if (!arguments.length) return tooltipX;
    tooltipX = _;
    return chart;
  };

  chart.tooltipYContent = function(_) {
    if (!arguments.length) return tooltipY;
    tooltipY = _;
    return chart;
  };

  chart.state = function(_) {
    if (!arguments.length) return state;
    state = _;
    return chart;
  };

  chart.defaultState = function(_) {
    if (!arguments.length) return defaultState;
    defaultState = _;
    return chart;
  };

  chart.noData = function(_) {
    if (!arguments.length) return noData;
    noData = _;
    return chart;
  };

  //============================================================


  return chart;
}

nv.models.sparkline = function() {

  //============================================================
  // Public Variables with Default Settings
  //------------------------------------------------------------

  var margin = {top: 2, right: 0, bottom: 2, left: 0}
    , width = 400
    , height = 32
    , animate = true
    , x = d3.scale.linear()
    , y = d3.scale.linear()
    , getX = function(d) { return d.x }
    , getY = function(d) { return d.y }
    , color = nv.utils.getColor(['#000'])
    , xDomain
    , yDomain
    ;

  //============================================================


  function chart(selection) {
    selection.each(function(data) {
      var availableWidth = width - margin.left - margin.right,
          availableHeight = height - margin.top - margin.bottom,
          container = d3.select(this);


      //------------------------------------------------------------
      // Setup Scales

      x   .domain(xDomain || d3.extent(data, getX ))
          .range([0, availableWidth]);

      y   .domain(yDomain || d3.extent(data, getY ))
          .range([availableHeight, 0]);

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup containers and skeleton of chart

      var wrap = container.selectAll('g.nv-wrap.nv-sparkline').data([data]);
      var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-sparkline');
      var gEnter = wrapEnter.append('g');
      var g = wrap.select('g');

      wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')')

      //------------------------------------------------------------


      var paths = wrap.selectAll('path')
          .data(function(d) { return [d] });
      paths.enter().append('path');
      paths.exit().remove();
      paths
          .style('stroke', function(d,i) { return d.color || color(d, i) })
          .attr('d', d3.svg.line()
            .x(function(d,i) { return x(getX(d,i)) })
            .y(function(d,i) { return y(getY(d,i)) })
          );


      // TODO: Add CURRENT data point (Need Min, Mac, Current / Most recent)
      var points = wrap.selectAll('circle.nv-point')
          .data(function(data) {
              var yValues = data.map(function(d, i) { return getY(d,i); });
              function pointIndex(index) {
                  if (index != -1) {
	              var result = data[index];
                      result.pointIndex = index;
                      return result;
                  } else {
                      return null;
                  }
              }
              var maxPoint = pointIndex(yValues.lastIndexOf(y.domain()[1])),
                  minPoint = pointIndex(yValues.indexOf(y.domain()[0])),
                  currentPoint = pointIndex(yValues.length - 1);
              return [minPoint, maxPoint, currentPoint].filter(function (d) {return d != null;});
          });
      points.enter().append('circle');
      points.exit().remove();
      points
          .attr('cx', function(d,i) { return x(getX(d,d.pointIndex)) })
          .attr('cy', function(d,i) { return y(getY(d,d.pointIndex)) })
          .attr('r', 2)
          .attr('class', function(d,i) {
            return getX(d, d.pointIndex) == x.domain()[1] ? 'nv-point nv-currentValue' :
                   getY(d, d.pointIndex) == y.domain()[0] ? 'nv-point nv-minValue' : 'nv-point nv-maxValue'
          });
    });

    return chart;
  }


  //============================================================
  // Expose Public Variables
  //------------------------------------------------------------

  chart.margin = function(_) {
    if (!arguments.length) return margin;
    margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
    margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
    margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
    margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
    return chart;
  };

  chart.width = function(_) {
    if (!arguments.length) return width;
    width = _;
    return chart;
  };

  chart.height = function(_) {
    if (!arguments.length) return height;
    height = _;
    return chart;
  };

  chart.x = function(_) {
    if (!arguments.length) return getX;
    getX = d3.functor(_);
    return chart;
  };

  chart.y = function(_) {
    if (!arguments.length) return getY;
    getY = d3.functor(_);
    return chart;
  };

  chart.xScale = function(_) {
    if (!arguments.length) return x;
    x = _;
    return chart;
  };

  chart.yScale = function(_) {
    if (!arguments.length) return y;
    y = _;
    return chart;
  };

  chart.xDomain = function(_) {
    if (!arguments.length) return xDomain;
    xDomain = _;
    return chart;
  };

  chart.yDomain = function(_) {
    if (!arguments.length) return yDomain;
    yDomain = _;
    return chart;
  };

  chart.animate = function(_) {
    if (!arguments.length) return animate;
    animate = _;
    return chart;
  };

  chart.color = function(_) {
    if (!arguments.length) return color;
    color = nv.utils.getColor(_);
    return chart;
  };

  //============================================================


  return chart;
}

nv.models.sparklinePlus = function() {

  //============================================================
  // Public Variables with Default Settings
  //------------------------------------------------------------

  var sparkline = nv.models.sparkline();

  var margin = {top: 15, right: 100, bottom: 10, left: 50}
    , width = null
    , height = null
    , x
    , y
    , index = []
    , paused = false
    , xTickFormat = d3.format(',r')
    , yTickFormat = d3.format(',.2f')
    , showValue = true
    , alignValue = true
    , rightAlignValue = false
    , noData = "No Data Available."
    ;

  //============================================================


  function chart(selection) {
    selection.each(function(data) {
      var container = d3.select(this);

      var availableWidth = (width  || parseInt(container.style('width')) || 960)
                             - margin.left - margin.right,
          availableHeight = (height || parseInt(container.style('height')) || 400)
                             - margin.top - margin.bottom;

      var currentValue = sparkline.y()(data[data.length-1], data.length-1);

      chart.update = function() { chart(selection) };
      chart.container = this;


      //------------------------------------------------------------
      // Display No Data message if there's nothing to show.

      if (!data || !data.length) {
        var noDataText = container.selectAll('.nv-noData').data([noData]);

        noDataText.enter().append('text')
          .attr('class', 'nvd3 nv-noData')
          .attr('dy', '-.7em')
          .style('text-anchor', 'middle');

        noDataText
          .attr('x', margin.left + availableWidth / 2)
          .attr('y', margin.top + availableHeight / 2)
          .text(function(d) { return d });

        return chart;
      } else {
        container.selectAll('.nv-noData').remove();
      }

      //------------------------------------------------------------



      //------------------------------------------------------------
      // Setup Scales

      x = sparkline.xScale();
      y = sparkline.yScale();

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup containers and skeleton of chart

      var wrap = container.selectAll('g.nv-wrap.nv-sparklineplus').data([data]);
      var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-sparklineplus');
      var gEnter = wrapEnter.append('g');
      var g = wrap.select('g');

      gEnter.append('g').attr('class', 'nv-sparklineWrap');
      gEnter.append('g').attr('class', 'nv-valueWrap');
      gEnter.append('g').attr('class', 'nv-hoverArea');

      wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Main Chart Component(s)

      var sparklineWrap = g.select('.nv-sparklineWrap');

      sparkline
        .width(availableWidth)
        .height(availableHeight);

      sparklineWrap
          .call(sparkline);

      //------------------------------------------------------------


      var valueWrap = g.select('.nv-valueWrap');

      var value = valueWrap.selectAll('.nv-currentValue')
          .data([currentValue]);

      value.enter().append('text').attr('class', 'nv-currentValue')
          .attr('dx', rightAlignValue ? -8 : 8)
          .attr('dy', '.9em')
          .style('text-anchor', rightAlignValue ? 'end' : 'start');

      value
          .attr('x', availableWidth + (rightAlignValue ? margin.right : 0))
          .attr('y', alignValue ? function(d) { return y(d) } : 0)
          .style('fill', sparkline.color()(data[data.length-1], data.length-1))
          .text(yTickFormat(currentValue));



      gEnter.select('.nv-hoverArea').append('rect')
          .on('mousemove', sparklineHover)
          .on('click', function() { paused = !paused })
          .on('mouseout', function() { index = []; updateValueLine(); });
          //.on('mouseout', function() { index = null; updateValueLine(); });

      g.select('.nv-hoverArea rect')
          .attr('transform', function(d) { return 'translate(' + -margin.left + ',' + -margin.top + ')' })
          .attr('width', availableWidth + margin.left + margin.right)
          .attr('height', availableHeight + margin.top);



      function updateValueLine() { //index is currently global (within the chart), may or may not keep it that way
        if (paused) return;

        var hoverValue = g.selectAll('.nv-hoverValue').data(index)

        var hoverEnter = hoverValue.enter()
          .append('g').attr('class', 'nv-hoverValue')
            .style('stroke-opacity', 0)
            .style('fill-opacity', 0);

        hoverValue.exit()
          .transition().duration(250)
            .style('stroke-opacity', 0)
            .style('fill-opacity', 0)
            .remove();

        hoverValue
            .attr('transform', function(d) { return 'translate(' + x(sparkline.x()(data[d],d)) + ',0)' })
          .transition().duration(250)
            .style('stroke-opacity', 1)
            .style('fill-opacity', 1);

        if (!index.length) return;

        hoverEnter.append('line')
            .attr('x1', 0)
            .attr('y1', -margin.top)
            .attr('x2', 0)
            .attr('y2', availableHeight);


        hoverEnter.append('text').attr('class', 'nv-xValue')
            .attr('x', -6)
            .attr('y', -margin.top)
            .attr('text-anchor', 'end')
            .attr('dy', '.9em')


        g.select('.nv-hoverValue .nv-xValue')
            .text(xTickFormat(sparkline.x()(data[index[0]], index[0])));

        hoverEnter.append('text').attr('class', 'nv-yValue')
            .attr('x', 6)
            .attr('y', -margin.top)
            .attr('text-anchor', 'start')
            .attr('dy', '.9em')

        g.select('.nv-hoverValue .nv-yValue')
            .text(yTickFormat(sparkline.y()(data[index[0]], index[0])));

      }


      function sparklineHover() {
        if (paused) return;

        var pos = d3.mouse(this)[0] - margin.left;

        function getClosestIndex(data, x) {
          var distance = Math.abs(sparkline.x()(data[0], 0) - x);
          var closestIndex = 0;
          for (var i = 0; i < data.length; i++){
            if (Math.abs(sparkline.x()(data[i], i) - x) < distance) {
              distance = Math.abs(sparkline.x()(data[i], i) - x);
              closestIndex = i;
            }
          }
          return closestIndex;
        }

        index = [getClosestIndex(data, Math.round(x.invert(pos)))];

        updateValueLine();
      }

    });

    return chart;
  }


  //============================================================
  // Expose Public Variables
  //------------------------------------------------------------

  // expose chart's sub-components
  chart.sparkline = sparkline;

  d3.rebind(chart, sparkline, 'x', 'y', 'xScale', 'yScale', 'color');

  chart.margin = function(_) {
    if (!arguments.length) return margin;
    margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
    margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
    margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
    margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
    return chart;
  };

  chart.width = function(_) {
    if (!arguments.length) return width;
    width = _;
    return chart;
  };

  chart.height = function(_) {
    if (!arguments.length) return height;
    height = _;
    return chart;
  };

  chart.xTickFormat = function(_) {
    if (!arguments.length) return xTickFormat;
    xTickFormat = _;
    return chart;
  };

  chart.yTickFormat = function(_) {
    if (!arguments.length) return yTickFormat;
    yTickFormat = _;
    return chart;
  };

  chart.showValue = function(_) {
    if (!arguments.length) return showValue;
    showValue = _;
    return chart;
  };

  chart.alignValue = function(_) {
    if (!arguments.length) return alignValue;
    alignValue = _;
    return chart;
  };

  chart.rightAlignValue = function(_) {
    if (!arguments.length) return rightAlignValue;
    rightAlignValue = _;
    return chart;
  };

  chart.noData = function(_) {
    if (!arguments.length) return noData;
    noData = _;
    return chart;
  };

  //============================================================


  return chart;
}

nv.models.stackedArea = function() {

  //============================================================
  // Public Variables with Default Settings
  //------------------------------------------------------------

  var margin = {top: 0, right: 0, bottom: 0, left: 0}
    , width = 960
    , height = 500
    , color = nv.utils.defaultColor() // a function that computes the color
    , id = Math.floor(Math.random() * 100000) //Create semi-unique ID incase user doesn't selet one
    , getX = function(d) { return d.x } // accessor to get the x value from a data point
    , getY = function(d) { return d.y } // accessor to get the y value from a data point
    , style = 'stack'
    , offset = 'zero'
    , order = 'default'
    , interpolate = 'linear'  // controls the line interpolation
    , clipEdge = false // if true, masks lines within x and y scale
    , x //can be accessed via chart.xScale()
    , y //can be accessed via chart.yScale()
    , scatter = nv.models.scatter()
    , dispatch =  d3.dispatch('tooltipShow', 'tooltipHide', 'areaClick', 'areaMouseover', 'areaMouseout')
    ;

  scatter
    .size(2.2) // default size
    .sizeDomain([2.2,2.2]) // all the same size by default
    ;

  /************************************
   * offset:
   *   'wiggle' (stream)
   *   'zero' (stacked)
   *   'expand' (normalize to 100%)
   *   'silhouette' (simple centered)
   *
   * order:
   *   'inside-out' (stream)
   *   'default' (input order)
   ************************************/

  //============================================================


  function chart(selection) {
    selection.each(function(data) {
      var availableWidth = width - margin.left - margin.right,
          availableHeight = height - margin.top - margin.bottom,
          container = d3.select(this);

      //------------------------------------------------------------
      // Setup Scales

      x = scatter.xScale();
      y = scatter.yScale();

      //------------------------------------------------------------


      // Injecting point index into each point because d3.layout.stack().out does not give index
      // ***Also storing getY(d,i) as stackedY so that it can be set to 0 if series is disabled
      data = data.map(function(aseries, i) {
               aseries.values = aseries.values.map(function(d, j) {
                 d.index = j;
                 d.stackedY = aseries.disabled ? 0 : getY(d,j);
                 return d;
               })
               return aseries;
             });


      data = d3.layout.stack()
               .order(order)
               .offset(offset)
               .values(function(d) { return d.values })  //TODO: make values customizeable in EVERY model in this fashion
               .x(getX)
               .y(function(d) { return d.stackedY })
               .out(function(d, y0, y) {
                  d.display = {
                    y: y,
                   y0: y0
                  };
                })
              (data);


      //------------------------------------------------------------
      // Setup containers and skeleton of chart

      var wrap = container.selectAll('g.nv-wrap.nv-stackedarea').data([data]);
      var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-stackedarea');
      var defsEnter = wrapEnter.append('defs');
      var gEnter = wrapEnter.append('g');
      var g = wrap.select('g');

      gEnter.append('g').attr('class', 'nv-areaWrap');
      gEnter.append('g').attr('class', 'nv-scatterWrap');

      wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');

      //------------------------------------------------------------


      scatter
        .width(availableWidth)
        .height(availableHeight)
        .x(getX)
        .y(function(d) { return d.display.y + d.display.y0 })
        .forceY([0])
        .color(data.map(function(d,i) {
          return d.color || color(d, i);
        }).filter(function(d,i) { return !data[i].disabled }));


      var scatterWrap = g.select('.nv-scatterWrap')
          .datum(data.filter(function(d) { return !d.disabled }))

      //d3.transition(scatterWrap).call(scatter);
      scatterWrap.call(scatter);





      defsEnter.append('clipPath')
          .attr('id', 'nv-edge-clip-' + id)
        .append('rect');

      wrap.select('#nv-edge-clip-' + id + ' rect')
          .attr('width', availableWidth)
          .attr('height', availableHeight);

      g   .attr('clip-path', clipEdge ? 'url(#nv-edge-clip-' + id + ')' : '');




      var area = d3.svg.area()
          .x(function(d,i)  { return x(getX(d,i)) })
          .y0(function(d) { return y(d.display.y0) })
          .y1(function(d) { return y(d.display.y + d.display.y0) })
          .interpolate(interpolate);

      var zeroArea = d3.svg.area()
          .x(function(d,i)  { return x(getX(d,i)) })
          .y0(function(d) { return y(d.display.y0) })
          .y1(function(d) { return y(d.display.y0) });


      var path = g.select('.nv-areaWrap').selectAll('path.nv-area')
          .data(function(d) { return d });
          //.data(function(d) { return d }, function(d) { return d.key });
      path.enter().append('path').attr('class', function(d,i) { return 'nv-area nv-area-' + i })
          .on('mouseover', function(d,i) {
            d3.select(this).classed('hover', true);
            dispatch.areaMouseover({
              point: d,
              series: d.key,
              pos: [d3.event.pageX, d3.event.pageY],
              seriesIndex: i
            });
          })
          .on('mouseout', function(d,i) {
            d3.select(this).classed('hover', false);
            dispatch.areaMouseout({
              point: d,
              series: d.key,
              pos: [d3.event.pageX, d3.event.pageY],
              seriesIndex: i
            });
          })
          .on('click', function(d,i) {
            d3.select(this).classed('hover', false);
            dispatch.areaClick({
              point: d,
              series: d.key,
              pos: [d3.event.pageX, d3.event.pageY],
              seriesIndex: i
            });
          })
      //d3.transition(path.exit())
      path.exit()
          .attr('d', function(d,i) { return zeroArea(d.values,i) })
          .remove();
      path
          .style('fill', function(d,i){ return d.color || color(d, i) })
          .style('stroke', function(d,i){ return d.color || color(d, i) });
      //d3.transition(path)
      path
          .attr('d', function(d,i) { return area(d.values,i) })


      //============================================================
      // Event Handling/Dispatching (in chart's scope)
      //------------------------------------------------------------

      scatter.dispatch.on('elementMouseover.area', function(e) {
        g.select('.nv-chart-' + id + ' .nv-area-' + e.seriesIndex).classed('hover', true);
      });
      scatter.dispatch.on('elementMouseout.area', function(e) {
        g.select('.nv-chart-' + id + ' .nv-area-' + e.seriesIndex).classed('hover', false);
      });

      //============================================================

    });


    return chart;
  }


  //============================================================
  // Event Handling/Dispatching (out of chart's scope)
  //------------------------------------------------------------

  scatter.dispatch.on('elementClick.area', function(e) {
    dispatch.areaClick(e);
  })
  scatter.dispatch.on('elementMouseover.tooltip', function(e) {
        e.pos = [e.pos[0] + margin.left, e.pos[1] + margin.top],
        dispatch.tooltipShow(e);
  });
  scatter.dispatch.on('elementMouseout.tooltip', function(e) {
        dispatch.tooltipHide(e);
  });

  //============================================================


  //============================================================
  // Global getters and setters
  //------------------------------------------------------------

  chart.dispatch = dispatch;
  chart.scatter = scatter;

  d3.rebind(chart, scatter, 'interactive', 'size', 'xScale', 'yScale', 'zScale', 'xDomain', 'yDomain', 'sizeDomain', 'forceX', 'forceY', 'forceSize', 'clipVoronoi', 'clipRadius');

  chart.x = function(_) {
    if (!arguments.length) return getX;
    getX = d3.functor(_);
    return chart;
  };

  chart.y = function(_) {
    if (!arguments.length) return getY;
    getY = d3.functor(_);
    return chart;
  }

  chart.margin = function(_) {
    if (!arguments.length) return margin;
    margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
    margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
    margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
    margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
    return chart;
  };

  chart.width = function(_) {
    if (!arguments.length) return width;
    width = _;
    return chart;
  };

  chart.height = function(_) {
    if (!arguments.length) return height;
    height = _;
    return chart;
  };

  chart.clipEdge = function(_) {
    if (!arguments.length) return clipEdge;
    clipEdge = _;
    return chart;
  };

  chart.color = function(_) {
    if (!arguments.length) return color;
    color = nv.utils.getColor(_);
    return chart;
  };

  chart.offset = function(_) {
    if (!arguments.length) return offset;
    offset = _;
    return chart;
  };

  chart.order = function(_) {
    if (!arguments.length) return order;
    order = _;
    return chart;
  };

  //shortcut for offset + order
  chart.style = function(_) {
    if (!arguments.length) return style;
    style = _;

    switch (style) {
      case 'stack':
        chart.offset('zero');
        chart.order('default');
        break;
      case 'stream':
        chart.offset('wiggle');
        chart.order('inside-out');
        break;
      case 'stream-center':
          chart.offset('silhouette');
          chart.order('inside-out');
          break;
      case 'expand':
        chart.offset('expand');
        chart.order('default');
        break;
    }

    return chart;
  };

  chart.interpolate = function(_) {
	    if (!arguments.length) return interpolate;
	    interpolate = _;
	    return interpolate;
  
  };
  
  //============================================================


  return chart;
}

nv.models.stackedAreaChart = function() {

  //============================================================
  // Public Variables with Default Settings
  //------------------------------------------------------------

  var stacked = nv.models.stackedArea()
    , xAxis = nv.models.axis()
    , yAxis = nv.models.axis()
    , legend = nv.models.legend()
    , controls = nv.models.legend()
    ;

  var margin = {top: 30, right: 25, bottom: 50, left: 60}
    , width = null
    , height = null
    , color = nv.utils.defaultColor() // a function that takes in d, i and returns color
    , showControls = true
    , showLegend = true
    , tooltips = true
    , tooltip = function(key, x, y, e, graph) {
        return '<h3>' + key + '</h3>' +
               '<p>' +  y + ' on ' + x + '</p>'
      }
    , x //can be accessed via chart.xScale()
    , y //can be accessed via chart.yScale()
    , yAxisTickFormat = d3.format(',.2f')
    , state = { style: stacked.style() }
    , defaultState = null
    , noData = 'No Data Available.'
    , dispatch = d3.dispatch('tooltipShow', 'tooltipHide', 'stateChange', 'changeState')
    , controlWidth = 250
    ;

  xAxis
    .orient('bottom')
    .tickPadding(7)
    ;
  yAxis
    .orient('left')
    ;
  stacked.scatter
    .pointActive(function(d) {
      //console.log(stacked.y()(d), !!Math.round(stacked.y()(d) * 100));
      return !!Math.round(stacked.y()(d) * 100);
    })
    ;

  //============================================================


  //============================================================
  // Private Variables
  //------------------------------------------------------------

  var showTooltip = function(e, offsetElement) {
    var left = e.pos[0] + ( offsetElement.offsetLeft || 0 ),
        top = e.pos[1] + ( offsetElement.offsetTop || 0),
        x = xAxis.tickFormat()(stacked.x()(e.point, e.pointIndex)),
        y = yAxis.tickFormat()(stacked.y()(e.point, e.pointIndex)),
        content = tooltip(e.series.key, x, y, e, chart);

    nv.tooltip.show([left, top], content, e.value < 0 ? 'n' : 's', null, offsetElement);
  };

  //============================================================


  function chart(selection) {
    selection.each(function(data) {
      var container = d3.select(this),
          that = this;

      var availableWidth = (width  || parseInt(container.style('width')) || 960)
                             - margin.left - margin.right,
          availableHeight = (height || parseInt(container.style('height')) || 400)
                             - margin.top - margin.bottom;

      chart.update = function() { chart(selection) };
      chart.container = this;

      //set state.disabled
      state.disabled = data.map(function(d) { return !!d.disabled });

      if (!defaultState) {
        var key;
        defaultState = {};
        for (key in state) {
          if (state[key] instanceof Array)
            defaultState[key] = state[key].slice(0);
          else
            defaultState[key] = state[key];
        }
      }

      //------------------------------------------------------------
      // Display No Data message if there's nothing to show.

      if (!data || !data.length || !data.filter(function(d) { return d.values.length }).length) {
        var noDataText = container.selectAll('.nv-noData').data([noData]);

        noDataText.enter().append('text')
          .attr('class', 'nvd3 nv-noData')
          .attr('dy', '-.7em')
          .style('text-anchor', 'middle');

        noDataText
          .attr('x', margin.left + availableWidth / 2)
          .attr('y', margin.top + availableHeight / 2)
          .text(function(d) { return d });

        return chart;
      } else {
        container.selectAll('.nv-noData').remove();
      }

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup Scales

      x = stacked.xScale();
      y = stacked.yScale();

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup containers and skeleton of chart

      var wrap = container.selectAll('g.nv-wrap.nv-stackedAreaChart').data([data]);
      var gEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-stackedAreaChart').append('g');
      var g = wrap.select('g');

      gEnter.append('g').attr('class', 'nv-x nv-axis');
      gEnter.append('g').attr('class', 'nv-y nv-axis');
      gEnter.append('g').attr('class', 'nv-stackedWrap');
      gEnter.append('g').attr('class', 'nv-legendWrap');
      gEnter.append('g').attr('class', 'nv-controlsWrap');

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Legend

      if (showLegend) {
        legend
          .width( availableWidth - controlWidth );

        g.select('.nv-legendWrap')
            .datum(data)
            .call(legend);

        if ( margin.top != legend.height()) {
          margin.top = legend.height();
          availableHeight = (height || parseInt(container.style('height')) || 400)
                             - margin.top - margin.bottom;
        }

        g.select('.nv-legendWrap')
            .attr('transform', 'translate(' + controlWidth + ',' + (-margin.top) +')');
      }

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Controls

      if (showControls) {
        var controlsData = [
          { key: 'Stacked', disabled: stacked.offset() != 'zero' },
          { key: 'Stream', disabled: stacked.offset() != 'wiggle' },
          { key: 'Expanded', disabled: stacked.offset() != 'expand' }
        ];

        controls
          .width( controlWidth )
          .color(['#444', '#444', '#444']);

        g.select('.nv-controlsWrap')
            .datum(controlsData)
            .call(controls);


        if ( margin.top != Math.max(controls.height(), legend.height()) ) {
          margin.top = Math.max(controls.height(), legend.height());
          availableHeight = (height || parseInt(container.style('height')) || 400)
                             - margin.top - margin.bottom;
        }


        g.select('.nv-controlsWrap')
            .attr('transform', 'translate(0,' + (-margin.top) +')');
      }

      //------------------------------------------------------------


      wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');


      //------------------------------------------------------------
      // Main Chart Component(s)

      stacked
        .width(availableWidth)
        .height(availableHeight)

      var stackedWrap = g.select('.nv-stackedWrap')
          .datum(data);
      //d3.transition(stackedWrap).call(stacked);
      stackedWrap.call(stacked);

      //------------------------------------------------------------


      //------------------------------------------------------------
      // Setup Axes

      xAxis
        .scale(x)
        .ticks( availableWidth / 100 )
        .tickSize( -availableHeight, 0);

      g.select('.nv-x.nv-axis')
          .attr('transform', 'translate(0,' + availableHeight + ')');
      //d3.transition(g.select('.nv-x.nv-axis'))
      g.select('.nv-x.nv-axis')
        .transition().duration(0)
          .call(xAxis);

      yAxis
        .scale(y)
        .ticks(stacked.offset() == 'wiggle' ? 0 : availableHeight / 36)
        .tickSize(-availableWidth, 0)
        .setTickFormat(stacked.offset() == 'expand' ? d3.format('%') : yAxisTickFormat);

      //d3.transition(g.select('.nv-y.nv-axis'))
      g.select('.nv-y.nv-axis')
        .transition().duration(0)
          .call(yAxis);

      //------------------------------------------------------------


      //============================================================
      // Event Handling/Dispatching (in chart's scope)
      //------------------------------------------------------------

      stacked.dispatch.on('areaClick.toggle', function(e) {
        if (data.filter(function(d) { return !d.disabled }).length === 1)
          data = data.map(function(d) {
            d.disabled = false;
            return d
          });
        else
          data = data.map(function(d,i) {
            d.disabled = (i != e.seriesIndex);
            return d
          });

        state.disabled = data.map(function(d) { return !!d.disabled });
        dispatch.stateChange(state);

        //selection.transition().call(chart);
        chart(selection);
      });

      legend.dispatch.on('legendClick', function(d,i) {
        d.disabled = !d.disabled;

        if (!data.filter(function(d) { return !d.disabled }).length) {
          data.map(function(d) {
            d.disabled = false;
            return d;
          });
        }

        state.disabled = data.map(function(d) { return !!d.disabled });
        dispatch.stateChange(state);

        //selection.transition().call(chart);
        chart(selection);
      });

      controls.dispatch.on('legendClick', function(d,i) {
        if (!d.disabled) return;

        controlsData = controlsData.map(function(s) {
          s.disabled = true;
          return s;
        });
        d.disabled = false;

        switch (d.key) {
          case 'Stacked':
            stacked.style('stack');
            break;
          case 'Stream':
            stacked.style('stream');
            break;
          case 'Expanded':
            stacked.style('expand');
            break;
        }

        state.style = stacked.style();
        dispatch.stateChange(state);

        //selection.transition().call(chart);
        chart(selection);
      });

      dispatch.on('tooltipShow', function(e) {
        if (tooltips) showTooltip(e, that.parentNode);
      });

      // Update chart from a state object passed to event handler
      dispatch.on('changeState', function(e) {

        if (typeof e.disabled !== 'undefined') {
          data.forEach(function(series,i) {
            series.disabled = e.disabled[i];
          });

          state.disabled = e.disabled;
        }

        if (typeof e.style !== 'undefined') {
          stacked.style(e.style);
        }

        selection.call(chart);
      });

    });


    return chart;
  }


  //============================================================
  // Event Handling/Dispatching (out of chart's scope)
  //------------------------------------------------------------

  stacked.dispatch.on('tooltipShow', function(e) {
    //disable tooltips when value ~= 0
    //// TODO: consider removing points from voronoi that have 0 value instead of this hack
    /*
    if (!Math.round(stacked.y()(e.point) * 100)) {  // 100 will not be good for very small numbers... will have to think about making this valu dynamic, based on data range
      setTimeout(function() { d3.selectAll('.point.hover').classed('hover', false) }, 0);
      return false;
    }
   */

    e.pos = [e.pos[0] + margin.left, e.pos[1] + margin.top],
    dispatch.tooltipShow(e);
  });

  stacked.dispatch.on('tooltipHide', function(e) {
    dispatch.tooltipHide(e);
  });

  dispatch.on('tooltipHide', function() {
    if (tooltips) nv.tooltip.cleanup();
  });

  //============================================================


  //============================================================
  // Expose Public Variables
  //------------------------------------------------------------

  // expose chart's sub-components
  chart.dispatch = dispatch;
  chart.stacked = stacked;
  chart.legend = legend;
  chart.controls = controls;
  chart.xAxis = xAxis;
  chart.yAxis = yAxis;

  d3.rebind(chart, stacked, 'x', 'y', 'size', 'xScale', 'yScale', 'xDomain', 'yDomain', 'sizeDomain', 'interactive', 'offset', 'order', 'style', 'clipEdge', 'forceX', 'forceY', 'forceSize', 'interpolate');

  chart.margin = function(_) {
    if (!arguments.length) return margin;
    margin.top    = typeof _.top    != 'undefined' ? _.top    : margin.top;
    margin.right  = typeof _.right  != 'undefined' ? _.right  : margin.right;
    margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
    margin.left   = typeof _.left   != 'undefined' ? _.left   : margin.left;
    return chart;
  };

  chart.width = function(_) {
    if (!arguments.length) return getWidth;
    width = _;
    return chart;
  };

  chart.height = function(_) {
    if (!arguments.length) return getHeight;
    height = _;
    return chart;
  };

  chart.color = function(_) {
    if (!arguments.length) return color;
    color = nv.utils.getColor(_);
    legend.color(color);
    stacked.color(color);
    return chart;
  };

  chart.showControls = function(_) {
    if (!arguments.length) return showControls;
    showControls = _;
    return chart;
  };

  chart.showLegend = function(_) {
    if (!arguments.length) return showLegend;
    showLegend = _;
    return chart;
  };

  chart.tooltip = function(_) {
    if (!arguments.length) return tooltip;
    tooltip = _;
    return chart;
  };

  chart.tooltips = function(_) {
    if (!arguments.length) return tooltips;
    tooltips = _;
    return chart;
  };

  chart.tooltipContent = function(_) {
    if (!arguments.length) return tooltip;
    tooltip = _;
    return chart;
  };

  chart.state = function(_) {
    if (!arguments.length) return state;
    state = _;
    return chart;
  };

  chart.defaultState = function(_) {
    if (!arguments.length) return defaultState;
    defaultState = _;
    return chart;
  };

  chart.noData = function(_) {
    if (!arguments.length) return noData;
    noData = _;
    return chart;
  };

  yAxis.setTickFormat = yAxis.tickFormat;

  yAxis.tickFormat = function(_) {
    if (!arguments.length) return yAxisTickFormat;
    yAxisTickFormat = _;
    return yAxis;
  };

  //============================================================

  return chart;
}
})();