NumPy参考 >例行程序 >Discrete Fourier Transform (numpy.fft) > numpy.fft.rfft2
numpy.fft.
rfft2
(a, s=None, axes=(-2, -1), norm=None)[source]¶Compute the 2-dimensional FFT of a real array.
Input array, taken to be real.
Shape of the FFT.
Axes over which to compute the FFT.
New in version 1.10.0.
Normalization mode (see numpy.fft
). Default is None.
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
.