Please read the last line to every message to r-help. There is no code in your post so we have no idea what you did wrong.
> x <- matrix(1:12, 3, 4, dimnames = list(letters[1:3], LETTERS[1:4])) > x A B C D a 1 4 7 10 b 2 5 8 11 c 3 6 9 12 > rownames(x) [1] "a" "b" "c" > colnames(x) [1] "A" "B" "C" "D" > dimnames(x) [[1]] [1] "a" "b" "c" [[2]] [1] "A" "B" "C" "D" On Sun, Dec 28, 2008 at 12:43 PM, Math Girl <mathmathg...@yahoo.com> wrote: > Hello, > > I have a 3 x 7 matrix. I want to assign a name to each row > and each column. I tried using > dimnames, but for some reason I cannot retrieve the names of the rows or the > names > of the columns. Is there another way to name the rows and columns and refer > to them? > > > > [[alternative HTML version deleted]] > > ______________________________________________ > 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.