how to find the value of the diagnol of the attached image

I hae attached the .mat file also in which the imagesc was performed

[John D'Errico]

Please don't ask the same question multiple times.

Answer 1

[Jon]

From your matlab.mat file it seems that you are showing the image represented by the matrix corr_data.

You can get the diagonal elements of this matrix using:

d = diag(corr_data)

From what I can see they are all either 1 or NaN