For loop to correlate column 1 in variable 1 to column 2 in variable 2 and so on.

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JM
JM 2018-6-21
回答： Jeff Miller 2018-6-22
I have two variables (A and B) that store 3000x30 data points. I'm interested in creating a for loop that stores the correlation coefficient for a correlation between the data in column 1 of variable A to column 1 in variable B, column 2 A and column 2 B, etc.
Currently I have...
for i=1:30
C(i) = corrcoef(A(:,i),B(:,i))
end
--- However it does not work. I believe the issue is because corrcoef gives 4 values in a 2x2 matrix, but I am only interested in the one value that is the correlation coefficient.
Thank you!

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回答（1 个）

Jeff Miller
Jeff Miller 2018-6-22
for i=1:30
tmp = corrcoef(A(:,i),B(:,i));
C(i) = tmp(1,2);
end

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