# How do you perform correlation coefficient for every ten rows in a specific column of a matrix?

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Chandler Quinn Stokes on 17 Jun 2021
Answered: Vimal Rathod on 21 Jun 2021
I have a somewhat large matrix (685 rows by 12 columns) that I need to take the correlation coefficient over every ten rows of specific columns that I need to specify. Any help would be appreciated.
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### Answers (1)

Vimal Rathod on 21 Jun 2021
Hi,
You could use the following snippet to find out correlation coefficient over every 10 rows of some specific column.
r = rand(685,12);
column = 3; % specify the column in which you want correlation coefficient
for i = 1:10:numel(r(:,1))
if(i+9 < 685)
b(:,i) = r(i:i+9,column);
end
end
c = corrcoef(b);
Hope this helps!
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