colSums gives you exactly what you want, but the vector is *named*. You can use it like a not-named numeric vector, without much trouble. If you still want to get rid of the names see ?unname
G. On Fri, Feb 29, 2008 at 12:02:46PM -0500, Jason Horn wrote: > Does anyone know how to get a vector of column sum from a data frame? > You can use colSums(), but this gives you a object of type "numeric" > with the column labels in the first row, and the sums in the second > row. I just want a vector of the sums, and I can't figure out a way > to index the "numeric" object. > > Thanks! > > ______________________________________________ > 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. -- Csardi Gabor <[EMAIL PROTECTED]> UNIL DGM ______________________________________________ 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.
