xorbits.numpy.fft.ifftshift#
- xorbits.numpy.fft.ifftshift(x, axes=None)[source]#
The inverse of fftshift. Although identical for even-length x, the functions differ by one sample for odd-length x.
- Parameters
x (array_like) – Input array.
axes (int or shape tuple, optional) – Axes over which to calculate. Defaults to None, which shifts all axes.
- Returns
y – The shifted array.
- Return type
ndarray
See also
fftshift
Shift zero-frequency component to the center of the spectrum.
Examples
>>> 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.]])
This docstring was copied from numpy.fft.