List of my modules...
Module: FFT
Description:
Computes the Fourier transform in 1D or 2D.
Connections:
Image
[required]
Input image, of type HxUniformScalarField3.
Ports:
Dimension

The FFT can be computed in 2D, for each axial cross-sections, or in 1D for each line in the X direction.
Options

The FFT can be centered, i.e. the 0-frequency in the middle. The inverse FTT can be computed, and the values can be renormalised.
Now

Pressing this button starts the computation.
Commands:
Additional options can be accessed when typing in the console FFT COMMAND_NAME.
verbose
Displays timing information after the computation. Retype to hide info.
create
Runs the computation. Returns the name of the output, so it can be used in a script, such as set RESULT [FFT create].