Reference
Table of Contents
▸
List of Commands
▸
Geometry Manipulation
▸
columns
◀
channels
|
crop
▶
columns
Built-in command
Arguments:
{ [image0] | x0[%] },_{ [image1] | x1[%] }
Description:
Keep only specified columns of selected images.
Dirichlet boundary is used when specified columns are out of range.
Example of use:
$ gmic
image.jpg
columns -25%,50%
Command:
image.jpg
columns -25%,50%