Reference

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rand

Built-in command

Arguments:

Description:

Fill selected images with random values uniformly distributed in the specified range.

Example of use:

$ gmic 400,400,1,3 rand -10,10 +blur 10 sign[-1]
Command: 400,400,1,3 rand -10,10 +blur 10 sign[-1]
Command: 400,400,1,3 rand -10,10 +blur 10 sign[-1]