U.S. Geological Survey Open-File Report 2008-1288
Geophysical Data Collected off the South Shore of Martha's Vineyard, Massachusetts
1. Data Access
Selected raster and vector data can be viewed within an ArcMap™ 9.2 map document (2008-1288.mxd). Refer to the “Raster and Vector Data Description” section below for details on file descriptions and locations.
Viewing the data:
Viewing the map documents:
Raster grids are stored as ESRI® binary grid format in the GIS_Catalog (included in the GIS_Catalog.zip file) and as ASCII raster files within individual data-set zip files. The ASCII raster files can be converted easily to ESRI® grid format in ArcGIS® with Spatial Analyst extension (ASCII to Raster). Vector data are stored as shapefiles within the zip file.
This section describes the location of the raster and vector data within the directory structure of the Web page. Raster data are delivered as ESRI® Binary Grids, ASCII Raster Grids, or TIFF images. Vector data are delivered as ESRI® Shapefiles. Text files are delivered as CSV files.
Grid: floating point ASCII with ESRI® header (included within individual dataset zip files) and ESRI® binary grid format within the GIS_Catalog.zip file.
Image: binary image (TIFF, GeoTIFF, and JPEG formats).
Shapefile: ESRI® file format for point, polyline, or polygon vector data.
Text Files: CSV files and raw data files.
This folder contains:
2008-1288.mxd – ArcMap™ 9.2 map document containing selected data layers described above.
3. Data Preview