Reference

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histogram

Built-in command

Arguments:

Description:

Compute the histogram of selected images.

If value range is set, the histogram is estimated only for pixels in the specified
value range. Argument value1 must be specified if value0 is set.

Default values:

nb_levels=256, value0=0% and value1=100%.

Example of use:

$ gmic image.jpg +histogram 64 display_graph[-1] 400,300,3
Command: image.jpg +histogram 64 display_graph[-1] 400,300,3
Command: image.jpg +histogram 64 display_graph[-1] 400,300,3