R help - Mar 2012 - how I can explore the variable names in my covariance matrix?

Hi all!

I am writing because I have a small problem

I have a matrix with different variables names
I made a function to compute the covariance matrix for my first matrix, but
the variables names changed to numbers e.s [,1]........


how I can explore the variable names in my covariance matrix????

thanks for every one want to help

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Can you provide a sample of code for us?

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QQ<-diag(7)
for (j in 1:7){
for (k in 1:7){
sum=0
for (i in 1:50){
sum=sum+(Y[i,j]-mean(Y[,j]))*(Y[i,k]-mean(Y[,k]))
}
QQ[j,k]=sum/49
}
}
round(QQ,2)
this is the function I made


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I would do:

QQ.frame <- data.frame(round(QQ,2))
name(QQ.Frame) <- paste("foo",seq(1:7))


foo 1 foo 2 foo 3 foo 4 foo 5 foo 6 foo 7
1     1     0     0     0     0     0     0
2     0     1     0     0     0     0     0
3     0     0     1     0     0     0     0
4     0     0     0     1     0     0     0
5     0     0     0     0     1     0     0
6     0     0     0     0     0     1     0
7     0     0     0     0     0     0     1

sorry my indent got a little off.

Is this what you are looking for?

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