Numpy 1.10
Numpy 1.10
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numpy.fft.fftshift()

numpy.fft.fftshift

numpy.fft.fftshift(x, axes=None) [source]

Shift the zero-frequency component to the center of the spectrum.

This function swaps half-spaces for all axes listed (defaults to all). Note that y[0] is the Nyquist component only if len(x) is even.

Parameters:

x : array_like

Input array.

axes : int or shape tuple, optional

Axes over which to shift. Default is None, which shifts a