correlate vector & report p-value
Vivien W. Chen wrote:
Dear all, I've been struggling with this through this weekend, I finally decided to ask help from you. Please let me know if there is effective way to deal with this problem. Thanks! Here is the problem: I have two matrices. Matrix A: a b c 4 5 2 3 2 1 4 5 6 Matrix B: d e f g h 3 4 5 2 1 2 3 7 8 6 8 5 1 3 4 I would like to correlate vector a of matrix A with with vectors d,e,f,g,h of matrix "B" and save the p-value in a seperate result vector. Then, I would like to repeat this process using vector b of matrix A. Then, I would like to do this for vector c of matrix A.
To get all correlation coefficients:
cor(A, B)
Which p-value do you mean, those from cor.test?
You can get all by:
apply(A, 2, function(x)
apply(B, 2, function(y) cor.test(x,y)$p.value))
Uwe Ligges
Vivien W. Chen
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