On Mon, Jul 13, 2009 at 5:55 AM, Weiwei Shi<helprh...@gmail.com> wrote: > Hi, there: > > Assume I have a dataframe with rownames like A with rownames like a to e, > >> A > [,1] [,2] > a 1 6 > b 2 7 > c 3 8 > d 4 9 > e 5 10 > > when I use A[1,], I lost the rowname for it, like below. How could I keep > it? Is there an easy way instead that I have to modify by myself after I > used A[1,] manually. > >> A[1,] > [1] 1 6
I think if you do str(A) you'll discover it's a matrix, not a data frame. Hadley -- http://had.co.nz/ ______________________________________________ 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.
