On 10/13/2009 10:13 AM, Amit Kumar wrote:
Hi! All,
I have large correlation matrix Cor. I wish to calculate average
correlation coefficient for this matrix.
Is there any function in R to do this?
Thanks in advance.
cormat - cor(iris[,1:4])
corlowtri - cormat[lower.tri(cormat)]
corlowtri
[1] -0.1175698 0.8717538 0.8179411 -0.4284401 -0.3661259 0.9628654
mean(corlowtri)
[1] 0.2900708
mean(abs(corlowtri))
[1] 0.594116
avgcor - function(x){mean(abs(x[lower.tri(x)]))}
avgcor(cor(iris[,1:4]))
[1] 0.594116
Amit
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