try this: > split(x, list(x$let, x$g)) $a.1 num let g 1 10 a 1 11 21 a 1
$b.1 num let g 7 52 b 1 17 56 b 1 $c.1 num let g 3 12 c 1 13 32 c 1 $d.1 num let g 9 12 d 1 19 76 d 1 $e.1 num let g 5 23 e 1 15 24 e 1 On Thu, Sep 1, 2011 at 1:53 PM, Changbin Du <changb...@gmail.com> wrote: > HI, Dear R community, > > I want to split a data frame by using two variables: let and g > >> x = data.frame(num = > c(10,11,12,43,23,14,52,52,12,23,21,23,32,31,24,45,56,56,76,45), let = > letters[1:5], g = 1:2) >> x > num let g > 1 10 a 1 > 2 11 b 2 > 3 12 c 1 > 4 43 d 2 > 5 23 e 1 > 6 14 a 2 > 7 52 b 1 > 8 52 c 2 > 9 12 d 1 > 10 23 e 2 > 11 21 a 1 > 12 23 b 2 > 13 32 c 1 > 14 31 d 2 > 15 24 e 1 > 16 45 a 2 > 17 56 b 1 > 18 56 c 2 > 19 76 d 1 > 20 45 e 2 > > I tried the following: > > xs = split(x,x$g*x$let) > > *Warning message: > In Ops.factor(x$g, x$let) : * not meaningful for factors* > > > xs = split(x,c(x$g*x$let)) > > *Warning message: > In Ops.factor(x$g, x$let) : * not meaningful for factors > * > > Can someone give some hints? > > Thanks! > > > -- > Sincerely, > Changbin > -- > > [[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. > -- Jim Holtman Data Munger Guru What is the problem that you are trying to solve? ______________________________________________ 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.
