numpy.fft.rfftn

numpy.fft.rfftn(a, s=None, axes=None)

Compute the n-dimensional fft of a real array.

Parameters:

a : array (real)

input array

s : sequence (int)

shape of the fft

axis : int

axis over which to compute the fft

Notes

A real transform as rfft is performed along the axis specified by the last element of axes, then complex transforms as fft are performed along the other axes.