dask.array.fft.ifftshift

dask.array.fft.ifftshift¶

dask.array.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.

This docstring was copied from numpy.fft.ifftshift.

Some inconsistencies with the Dask version may exist.

Parameters

xarray_like: Input array.
axesint or shape tuple, optional: Axes over which to calculate. Defaults to None, which shifts all axes.

Returns

yndarray: The shifted array.

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.]])

dask.array.fft.fftshift

dask.array.linalg.cholesky