This is an old revision of the document!
PHP's gd library is missing or unable to create PNG images
Calc Histogram
Description
This functor calculates a histogram from a map.
Inputs
Name | Type | Description |
---|---|---|
Map | Map | Any map |
Optional Inputs
Outputs
Name | Type | Description |
---|---|---|
Histogram | Lookup Table | The calculated histogram. |
Notes
It also possible to calculate a histogram relative to the cumulative values. To do this, set both input flags (“Cumulative” and “Relative”).
When the “Interval Width” is different from one, the input values are remapped according to the expression below to speed up the calculation.
, where value2 is the resulting value, value is the value present in the input map and width is the width of the interval.
Because of the remapping, the lower and upper limits of the resulting histogram can be lower and greater, respectively, than the lower and upper limits of the input map.
Group
Internal Name
CalcHistogram