For completeness. On Thu, May 6, 2010 at 8:03 PM, Joris Meys <jorism...@gmail.com> wrote:
> Table <- matrix(ncol=3,nrow=4,c(0,0,0,0,7,2,1,3,4,0,3,4)) > > # one way > t(t(Table)/colSums(Table)) > > # another way > apply(Table,2,function(x){x/sum(x)}) > > Take in mind that your solution is wrong. If you divide 0 by 0, you get > NaN. If you want this not to happen, you'll have to add an extra control. > > On Thu, May 6, 2010 at 7:06 PM, n.via...@libero.it <n.via...@libero.it>wrote: > >> >> Dear list, >> Im trying to do the following operation but im not able to do it >> This is my table: >> 1 2 3 >> 1 0 7 4 >> 2 0 2 0 >> 3 0 1 3 >> 4 0 3 4 >> >> what i would like to do is >> >> divide each row values with the corresponding column' sum,namely: >> >> 1 2 3 >> 1 0 0.54 0.36 >> 2 0 0.15 0 >> 3 0 0.08 0.27 >> 4 0 0.23 0.36 >> >> >> thanks for your attention >> >> >> [[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. >> > > > > -- > Joris Meys > Statistical Consultant > > Ghent University > Faculty of Bioscience Engineering > Department of Applied mathematics, biometrics and process control > > Coupure Links 653 > B-9000 Gent > > tel : +32 9 264 59 87 > joris.m...@ugent.be > ------------------------------- > Disclaimer : http://helpdesk.ugent.be/e-maildisclaimer.php > -- Joris Meys Statistical Consultant Ghent University Faculty of Bioscience Engineering Department of Applied mathematics, biometrics and process control Coupure Links 653 B-9000 Gent tel : +32 9 264 59 87 joris.m...@ugent.be ------------------------------- Disclaimer : http://helpdesk.ugent.be/e-maildisclaimer.php [[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.