Ben Bolker wrote:
Sometime soon when I have the time and energy I will start campaigning for an additional "drop" argument to subset that does what one expects (!!??) with subsetted factor variables ...
Not that one again! For at least one other value of one, the expectation is the opposite: Factor levels do not go away just because they happen not to be present in data.
fct <- lapply(dd, is.factor) dd[fct] <- lapply(dd[fct], "[", drop=TRUE) and begone with it... -- 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 ______________________________________________ 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.
