I have temp list which have 19 data.frame I want to get number of levels for pr in the first dat.frame I do this like this: temp[[1]]$pr just has "1A24" after I do nlevels(temp[[1]]$pr) I expect to get 1, but I get 19
anyone know why? > tail(temp[[1]]$pr) [1] 1A24 1A24 1A24 1A24 1A24 1A24 19 Levels: 1A24 1A57 1A5J 1A6X 1AB7 1AF8 1AFI 1AGG 1AH9 1AHL 1AJ3 1AJW ... 1AZK > nlevels(temp[[1]]$pr) [1] 19 Aimin ______________________________________________ [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 and provide commented, minimal, self-contained, reproducible code.
