xcorr - per matrix column

Hi,

I'm trying to achieve something with xcorr and cannot succeed.

Would appreciate any help.

I have quite a big matrix (700,1500).

I would like to get the autocorrelation per matrix column. I tried to use the xcorr, but it gives me the x-correlation also to other columns.

How would I autocorrelation per matrix column?

[omri r]

without a for loop

Answer 1

[KSSV]

A = rand(700,1500) ;
C = zeros([],[]) ;
for i = 1:size(A,1)
    C(:,i) = xcorr(A(:,i)) ;
end

[omri r]

Thanks, I meant without a for loop. It would take to much time.

[KSSV]

Have you tried that? That dimension matrix not taking much time.