[R] t.test() on a list

[Petr PIKAL]

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


r-help-bounces at r-project.org 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 <gunter.berton at gene.com> 
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: r-help-bounces at r-project.org [
mailto:r-help-bounces at r-project.org] On
> > Behalf Of Gang Chen
> > Sent: Thursday, October 02, 2008 11:24 AM
> > To: r-help at stat.math.ethz.ch
> > 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 at 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.