Adrian and Jorge,
  Try either rcorr in the Hmisc package or corr.test in the psych package.

They both will give you a matrix of correlations as well as the p values of the correlations.

Bill

At 4:38 PM -0400 7/10/09, Jorge Ivan Velez wrote:
Hi Adrian,
Using cor.test you need either two variables or a formula as stated in
?cor.test  :-)

Take a look at

http://www.nabble.com/Re:-applying-cor.test-to-a-(m,-n)-matrix---SUMMARY-to17150239.html#a17150239

for different alternatives to do what you asked for.

HTH,

Jorge


On Fri, Jul 10, 2009 at 4:25 PM, Adrian Johnson
<oriolebaltim...@gmail.com>wrote:

 Thank you Jorge.

 I tried it, i have the following error. honestly I dont understand the
 error. could you help please.
 thank you.

 > cor.test(t(longley),method='pearson')
 Error in cor.test.default(t(longley), method = "pearson") :
  element 1 is empty;
   the part of the args list of 'length' being evaluated was:
   (y)





 On Fri, Jul 10, 2009 at 4:22 PM, Jorge Ivan
 Velez<jorgeivanve...@gmail.com> wrote:
 > Dear Adrian,
 > See ?cor.test.
 > HTH,
 >
 > Jorge
 >
 >
 > On Fri, Jul 10, 2009 at 4:13 PM, Adrian Johnson <
 oriolebaltim...@gmail.com>
 > wrote:
 >>
 >> Hi I have a matrix with samples on columns and variables and their
 >> values on rows.
 >> I want to calculate correlation (pearson) between a variable and
 >> others in rows and obtain t-scores for the variables.
 >> how can i do it.
 >> thank you.
 >> Ad
 >>
 >> ______________________________________________
 >> R-help@r-project.org mailing list
 >> https://stat.ethz.ch/mailman/listinfo/r-help
 >> 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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