That did it! Thanks very much Berend. On Wed, May 2, 2012 at 4:19 AM, Berend Hasselman <b...@xs4all.nl> wrote: > > On 02-05-2012, at 07:22, Kaushik Krishnan wrote: > >> Hey folks >> >> I'm sorry for bringing what must be a very simple question to R-help, >> but after some research I haven't been able to find a solution to my >> problem. >> >> Suppose I create a simple factor: >> [code] >>> x<-c("A","B","B","C","A") >>> x >> [1] "A" "B" "B" "C" "A" >>> x <- as.factor(x) >>> x >> [1] A B B C A >> Levels: A B C >> [/code] >> >> Now, when I see this factor in terms of its numeric level values, I get >> [code] >>> as.numeric(x) >> [1] 1 2 2 3 1 >> [/code] >> >> Suppose I have >> [code] >> y <- 2 >> [/code] >> >> I want the numeric value of y to reference the level of factor x. That >> is, I am looking for a function (`foo') so that I will get the >> following >> [code] >> foo(y) #or maybe foo(y,x) >> [1] B >> [/code] >> >> I can think of a roundabout way of doing through a user defined >> function, but I am sure that there is a built-in function that offers >> this functionality. I'd be grateful if someone could tell me what that >> function is. > > Maybe this? > > levels(x)[y] > > Berend >
-- Kaushik Krishnan (kaushik.s.krish...@gmail.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.