numpy.fft.rfft2

numpy.fft.rfft2(a, s=None, axes=(-2, -1))

Compute the 2-dimensional FFT of a real array.

Parameters :

a : array

Input array, taken to be real.

s : sequence of ints, optional

Shape of the FFT.

axes : sequence of ints, optional

Axes over which to compute the FFT.

Returns :

out : ndarray

The result of the real 2-D FFT.

See also

rfftn

Compute the N-dimensional discrete Fourier Transform for real input.

Notes

This is really just rfftn with different default behavior. For more details see rfftn.