Marc Bernard <[EMAIL PROTECTED]> writes: > Daer All, > > I have a factor variable, X with 5 levels. When I type tables(X) it gives me: > > table(X) > 1 2 3 4 5 > 10 5 0 0 0 > > How to drop the levels with zeros such that when I will type: > table(X) it will give me: > > table(X) > 1 2 > 10 5
table(factor(X)) or table(X[drop=TRUE]) should do it. The latter runs the former, but the intention might be clearer. -- O__ ---- Peter Dalgaard Øster Farimagsgade 5, Entr.B c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918 ~~~~~~~~~~ - ([EMAIL PROTECTED]) FAX: (+45) 35327907 ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
