On Thu, Nov 26, 2009 at 12:09 AM, Titus Malsburg <malsb...@gmail.com> wrote: > The documentation of xyplot could be improved here. It says: > > "If 'index.cond' is a list, it has to be as long as the number of > conditioning > variables, and the 'i'-th component has to be a valid indexing vector for > the > integer vector '1:nlevels(g_i)' (which can, among other things, repeat some > of the levels or drop some altogether)." > > It should make explicit that nlevels is the number of levels actually > used in the data and not length(levels(f)).
Actually, it should say that whether unused levels are counted depends on the value of the 'drop.unused.levels' argument. I will update the documentation. -Deepayan ______________________________________________ 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.
