Thanks a lot, Ista! On Thu, Apr 7, 2011 at 11:52 AM, Ista Zahn <iz...@psych.rochester.edu> wrote: > Hi Dimitri, > The factor() function allows you to specify the levels. So > > small.frame$myfactor <- factor(small.frame$myfactor, levels = > levels(large.frame$myfactor)) > > should do it. > > Best, > Ista > > On Thu, Apr 7, 2011 at 11:47 AM, Dimitri Liakhovitski > <dimitri.liakhovit...@gmail.com> wrote: >> Hello! >> >> I have larger and a smaller data frame with 1 factor in each - it's >> the same factor: >> >> large.frame<-data.frame(myfactor=LETTERS[1:10]) >> small.frame<-data.frame(myfactor=LETTERS[c(9,7,5,3,1)]) >> levels(large.frame$myfactor) >> levels(small.frame$myfactor) >> table(large.frame$myfactor) >> table(small.frame$myfactor) >> >> myfactor has 10 levels in large.frame and 5 levels in small.frame. All >> 5 levels in small.frame are present in large.frame. >> How could I make levels(small.frame$myfactor) contain all the same >> levels as levels(large.frame$myfactor)? >> In other words, I want table(small.frame$myfactor) to have the same >> number of entries as table(small.frame$myfactor) but with 5 zeros in >> it: >> A B C D E F G J I J >> 1 0 1 0 1 0 1 0 1 0 >> >> Thank you very much for your suggestions! >> -- >> Dimitri Liakhovitski >> Ninah Consulting >> www.ninah.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. >> > > > > -- > Ista Zahn > Graduate student > University of Rochester > Department of Clinical and Social Psychology > http://yourpsyche.org >
-- Dimitri Liakhovitski Ninah Consulting www.ninah.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.
