[SciPy-User] Fwd: Discrete Fourier transforms (scipy.fftpack)- radially averaged power spectrum(RAPS)

[Eyal Saiet]

Hello,
The scipy.fftpack is quite a comprehensive toolset. Nonetheless, I am
scratching my head why I cannot find a radially averaged power
spectrum(RAPS) tool in scipy.fftpack which seems a natural complementary
tool for an FFT toolset.  Do people just write the function for themselves?
Or is it somewhere else already?

* The radially averaged power spectrum(RAPS) is s the direction-independent
mean spectrum, i.e. the average of all possible directional power spectra.
The radially averaged power spectrum provides a convenient means to view
and compare information contained in 2-D spectra in 1-D. This function
computes and plots the RAPS of an input matrix (does not consider corner
values outside averaging radius). The image can be rectangular but must be
2-D (e.g., multi-color channel data is not supported). The spatial
resolution of the data is also specified
(https://www.mathworks.com/matlabcentral/fileexchange/23636-radially-averaged-power-spectrum-of-2d-real-valued-matrix
)

*This tool was in Astropy 2.7 but I cannot find it Astropy 3.1....

Thanks
-- 

Eyal
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