PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Here is an example; I am not sure what problem you are having with 'indexing' since you did not show an example. > x <- data.frame(a=1:10, b=21:30, c=41:50) > y <- colSums(x) > y a b c 55 255 455 > # indexing into y > y[1] a 55 > # same as > y["a"] a 55 > > On Fri, Feb 29, 2008 at 2:21 PM, Jason Horn <[EMAIL PROTECTED]> 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. > -- Jim Holtman Cincinnati, OH +1 513 646 9390 What is the problem you are trying to solve? Tell me what you want to do, not how you want to do it. ______________________________________________ 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.
