jax.numpy.fft.ifftshift¶

jax.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.

LAX-backend implementation of ifftshift(). Original docstring below.

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.]])