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Module « scipy.fft »

Fonction rfft2 - module scipy.fft

Signature de la fonction rfft2

def rfft2(x, s=None, axes=(-2, -1), norm=None, overwrite_x=False, workers=None, *, plan=None) 

Description

help(scipy.fft.rfft2)

Compute the 2-D FFT of a real array.

Parameters
----------
x : 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.
norm : {"backward", "ortho", "forward"}, optional
    Normalization mode (see `fft`). Default is "backward".
overwrite_x : bool, optional
    If True, the contents of `x` can be destroyed; the default is False.
    See :func:`fft` for more details.
workers : int, optional
    Maximum number of workers to use for parallel computation. If negative,
    the value wraps around from ``os.cpu_count()``.
    See :func:`~scipy.fft.fft` for more details.
plan : object, optional
    This argument is reserved for passing in a precomputed plan provided
    by downstream FFT vendors. It is currently not used in SciPy.

    .. versionadded:: 1.5.0

Returns
-------
out : ndarray
    The result of the real 2-D FFT.

See Also
--------
irfft2 : The inverse of the 2-D FFT of real input.
rfft : The 1-D FFT of real input.
rfftn : Compute the N-D discrete Fourier Transform for real
        input.

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

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