FFT contour and mean

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Philippe
Philippe 2014-6-21
回答： Philippe 2014-6-21
Hi, I wish to get some kind of mean out of this experimental FFT I've got, and I want to see it in a bidimensional graph, since I the graph presents some kind of symmetry. I believe it is some kind of contour command I have to use but I've been having a lot of trouble with the fft() command.
Plus does anybody know how do I trace the phase in the same way?
The problematic part of the code is in the end of it. (The file is attached.)
Thanks in advance.

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Philippe
Philippe 2014-6-21
What made it much easier to me was applying this command:
k = (10/3)*sum((abs(fft(rXR_exp)))')/N;
plot(k);
!0/3 is an experimental constant which is working fine for me.

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Image Analyst
Image Analyst 2014-6-21
What a mess. I suggest you use imshow() or image() to display it instead of surf(). It's virtually impossible to trace anything on that surf graphic, but for an image it would be trivial.

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