Try this:
aggregate(t(x), list(gl(2, 2)), FUN = 'diff') On Sun, Jan 30, 2011 at 11:32 PM, Ramya <ramya.vict...@gmail.com> wrote: > > Hi, > > I have a Dataframe. > > A B C D > 0.1 0.7 0.9 0.8 > 0.20 0.60 0.80 0.70 > 0.40 0.80 0.70 0.76 > > I need a resultant dataframe > > (A-B) (C-D) > -0.6 0.1 > -0.40 0.1 > -0.40 -0.06 > > Any suggestion would be of a great help > > Thanks > Ramya > > -- > View this message in context: > http://r.789695.n4.nabble.com/Finding-a-Diff-within-a-Dataframe-columns-tp3247943p3247943.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. > -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40" S 49° 16' 22" O [[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.
