ifftshift(x, axes=None)
Input array.
Axes over which to calculate. Defaults to None, which shifts all axes.
The shifted array.
The inverse of fftshift
. Although identical for even-length x, the functions differ by one sample for odd-length x.
fftshift
Shift zero-frequency component to the center of the spectrum.
>>> freqs = np.fft.fftfreq(9, d=1./9).reshape(3, 3)
... freqs array([[ 0., 1., 2.], [ 3., 4., -4.], [-3., -2., -1.]])
>>> np.fft.ifftshift(np.fft.fftshift(freqs)) array([[ 0., 1., 2.], [ 3., 4., -4.], [-3., -2., -1.]])See :
The following pages refer to to this document either explicitly or contain code examples using this.
dask.array.fft.ifftshift
numpy.fft.ifftn
numpy.fft.fftshift
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