I appreciate your suggestion. The example I provided was fabricated because I was only focusing on the programming perspective on how to deal with such a data structure, not real statistical issues. Do you mind elaborating a little more why that would not be appreciate? I know I can do it with a couple of loops, but I still appreciate suggestions on how to write a line or two to run t-tests on such a data structure.
Thanks, Gang On Thu, Oct 2, 2008 at 5:11 PM, Bert Gunter <[EMAIL PROTECTED]> wrote: > I am sure you will get helpful answers. I am almost as sure that you > shouldn't be doing this. I suggest you consult with your local statistician. > > -- Bert Gunter > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On > Behalf Of Gang Chen > Sent: Thursday, October 02, 2008 11:24 AM > To: [EMAIL PROTECTED] > Subject: [R] t.test() on a list > > I have a list, myList, with each of its 9 components being a 15X15 > matrix. I want to run a t-test across the list for each component in > the matrix. For example, the first t-test is on myList[[1]][1, 1], > myList[[2]][1, 1], ..., myList[[9]][1, 1]; and there are totally 15X15 > t-tests. How can I run these t-tests in a simple way? > > TIA, > Gang ______________________________________________ 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.