destination after Beta: Number
This node produces specified number of items from exponential sequence, defined by formula x_n = x0*exp(alpha*n) or x_n = x0*base^n. Obviously, these formulas are equivalent when alpha = log(base).
Sequence can be re-scaled so that maximum of absolute values of produced items will be equal to specified value.
Note. Please do not forget well-known properties of exponential sequences:
- They grow very quickly when base is greater than 1.0 (or alpha greater than 0.0).
- They decrease very quickly when base is less than 1.0 (or alpha less than 0.0).
Inputs & Parameters¶
All parameters except for Mode can be given by the node or an external input. This node has the following parameters:
|Mode||Enum: Log or Base||Log||If Log, then x_n = x0*exp(alpha*n). If Base, then x_n = x0*base^n.|
|X0||Float||1.0||Item of sequence for N=0.|
|Alpha||Float||0.1||Coefficient in formula exp(alpha*n). Used only in Log mode.|
|Base||Float||2.0||Exponential base in formula base^n. Used only in Base mode.|
|N from||Int||0||Minimal value of N.|
|N to||Int||10||Maximal value of N.|
|Max||Float||0.0||If non-zero, then all output sequence will be re-scaled so that maximum of absolute values will be equal to number specified.|
This node has one output: Sequence.
Inputs and outputs are vectorized, so if series of values is passed to one of inputs, then this node will produce several sequences.
Example of usage¶
Given simplest nodes setup:
you will have something like: