orientation
No arguments
Description:
Compute the pointwise orientation of vector-valued pixels in selected images.
This command has a tutorial page.
Example of use:
$ gmic
image.jpg +orientation +norm[-2] negate[-1] mul[-2] [-1] reverse[-2,-1]

Command:
image.jpg +orientation +norm[-2] negate[-1] mul[-2] [-1] reverse[-2,-1]

Command:
image.jpg +orientation +norm[-2] negate[-1] mul[-2] [-1] reverse[-2,-1]

Command:
image.jpg +orientation +norm[-2] negate[-1] mul[-2] [-1] reverse[-2,-1]