try: apply(data[,c(6:42)], 2, max)
(as stephen sefick Just mentioned...) On Tue, Mar 17, 2009 at 2:56 AM, timbean <timb...@gmail.com> wrote: > > I'd like to perform some calculations across a series of columns. Is there > an > easy way to do so? For example, I'd like to calculate the maximum value > from > columns 6-42. Although I can use, say: > > pmax(data[,6],data[,7],data[,8], etc.), I'd prefer to be able to do > something like > > pmax(data[,6:42]). Unfortunately, doing so returns 36 columns. > > Thanks, > Tim > -- > View this message in context: > http://www.nabble.com/Calculate-across-columns-tp22549648p22549648.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > 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. > -- ---------------------------------------------- My contact information: Tal Galili Phone number: 972-50-3373767 FaceBook: Tal Galili My Blogs: www.talgalili.com www.biostatistics.co.il [[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.
