SIDAMFFT(w, [win, out, subtract])

Compute the discrite Fourier transform of the input wave. When the input wave is 3D, the histogram is generated layer by layer.

Parameters

w : wave
The input wave, 2D or 3D.

win : string, default “none”
An image window function.

out : int {1 – 6}, default 3
The Output mode of FFT.

  1. complex
  2. real
  3. magnitude
  4. magnitude squared
  5. phase
  6. imaginary

subtract : int {0 or !0}, default 0
Set !0 to subtract the average before FFT. For a 3D wave, the average of each layer is subtracted.

Returns

wave
Fourier-transformed wave.

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