If the values in xm are always going to be consecutive integers 1:n, then this:
> prob.xm[xm] xm 1 2 3 4 5 5 5 6 6 0.111 0.111 0.111 0.111 0.333 0.333 0.333 0.222 0.222 otherwise: > prob.xm[as.numeric(as.factor(xm))] xm 1 2 3 4 5 5 5 6 6 0.111 0.111 0.111 0.111 0.333 0.333 0.333 0.222 0.222 (equivalent in this case). Sarah On Thu, Sep 22, 2011 at 3:41 PM, Jim Silverton <jim.silver...@gmail.com> wrote: >> >> Hi all, >> I have a vector xm say: xm = c(1,2,3,4,5,5,5,6,6) >> >> I want to return a vector with the corresponding probabilities based on the >> amount of times the numbers occurred. For example, I should get the >> following vector for xm: >> prob.xm = c(1/9, 1/9, 1/9, 1/9, 3/9, 3/9, 3/9, 2/9, 2/9) >> > > Using prop.table gives: > > > Usage (with table) > >> prob.xm <- round( prop.table(table(xm)), digits=3) >> prob.xm > xm > 1 2 3 4 5 6 > 0.111 0.111 0.111 0.111 0.333 0.222 > > But I want the entire length of probabilities, not just a condensed version. > Any help is greatl appreciated. > > -- Sarah Goslee http://www.functionaldiversity.org ______________________________________________ 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.