It's not quite clear what the OP really wanted. A more general solution may be:
> a=c(4, 3, 2, 3) > ta <- table(a) > ta a 2 3 4 1 2 1 > ta[as.character(a)] a 4 3 2 3 1 2 1 2 > HTH Ray Brownrigg On Mon, 07 Feb 2011, Jorge Ivan Velez wrote: > Hi Carrie, > > Try > > > x <- rle(a) > > rep(x$lengths, x$lengths) > > [1] 1 2 2 1 > > HTH, > Jorge > > On Sun, Feb 6, 2011 at 8:21 PM, Carrie Li <> wrote: > > Hello R-helpers, > > > > I have a question about counting numbers. > > Here is a simple example. > > > > a=c(2, 3, 3,4) > > > > > table(a) > > > > a > > 2 3 4 > > 1 2 1 > > > > so, I can to create another variables that has the corresponding counting > > numbers. > > In this case, I want to have: > > > > b=c(1,2,2,1) > > > > Is there any way coding for this ? > > > > Thanks for helps! > > > > Carrie-- ______________________________________________ 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.
