Hi Geeti, If d is your data.frame, the following is an option:
as.data.frame.table(with(d, tapply(Count, list(x1, x2), sum))) HTH, Jorge On Thu, Jun 3, 2010 at 11:18 AM, Geeti Khan <> wrote: > Hi, > I have a dataset with three column like this > x1 x2 Count > 1 0 523 > 1 0 23 > 0 0 2 > 0 1 45 > 0 0 3 > 1 1 433 > > I need to create a loop so that when c(x1,x2)=c(1,1), I can add the > corresponding Counts.When c(x1,x2)=c(1,0), can add the corresponding counts > and so on. Can anyone help me???? > > > > > [[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. > [[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.
