FFT contour and mean

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.

Answer 1

[Philippe]

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.

Answer 2

[Image Analyst]

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.