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Re: What is actual operation of fftshift when it appears in the nested f


From: mmuetzel
Subject: Re: What is actual operation of fftshift when it appears in the nested form with FFT?
Date: Thu, 1 Aug 2019 09:44:19 -0500 (CDT)

As far as I can tell, Octave doesn't combine functions but calls them one
after the other.
So in your example, Octave would call fftshift with the parameter X. Next,
it would call fft with the result of this fftshift. As the last step, it
would call fftshift again with the result of the fft and assign that result
to Y.

"fftshift" is implemented as a .m file. So you can look at its code by
calling "edit fftshift" at Octave's command prompt.

HTH
Markus



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