Hi,
I tried the following one:
z <- outer(1:14,1:14,function(i,j)
eval(parse(text=paste("cor(D2_",i,",D2_",j,")",sep=""))))
but this doen not work (why?).
Two alternatives which work are either
x <- matrix(0,length(D2_1,14)
for (i in 1:14) x[,i] <-
eval(parse(text=paste("D2_",i,sep="")))
z <- cor(x)
or
z <- diag(14)
for (i in 1:14) for (j in 1:14) z[i,j] <-
eval(parse(text=paste("cor(D2_",i,",D2_",j,")",sep="")))
--- Robert O'Brien <[EMAIL PROTECTED]>
wrote:
> Hello all. I have 14 variables, named D2_1,
> D2_2,...,D2_14 (inherited from a data set). I would
> like to create a matrix of correlations, although I
> would be content in just learning how to create a
> proper do loop. I tried something like this:
>
>
> (for i in 1:14){cor(D2_[i],D2_[i], use =
> "complete.obs")}
>
> This is wrong, of course, but I don't know how to
> "tell" R to run through D2_1, D2_2,...,D2_14 giving
> me
> the correlations for each pair.
>
> Any help or hints would be appreciated.
>
> Sincerely,
>
> Robert O'Brien
>
> ______________________________________________
> R-help@r-project.org mailing list
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> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained,
> reproducible code.
>
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