Hi maybe not an answer you like but
apply(do.call(rbind, lapply(myList, c)), 2, t.test) shall give you desired results Regards Petr [EMAIL PROTECTED] napsal dne 02.10.2008 23:25:23: > 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. ______________________________________________ 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.