| Table of Contents ▸ List of Commands ▸ Mathematical Operators ▸ sign | ◀ ror | sin ▶ |
sign | Built-in command |
No arguments
Description:
Compute the pointwise sign of selected images.
Examples of use:
• Example #1
$ gmic image.jpg +sub {ia} sign[-1]
• Example #2
$ gmic 300,1,1,1,'cos(20*x/w+u)' +sign display_graph 400,300
