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atan2

Built-in command

Arguments:

• [x_argument]

Description:

Compute the pointwise oriented arctangent of selected images.

Each selected image is regarded as the y-argument of the arctangent function, while the
specified image gives the corresponding x-argument.

This command has a tutorial page.

Example of use:

Command: (-1,1) (-1;1) resize 400,400,1,1,3 atan2[1] [0] keep[1] mod {pi/8}