order of panels in xyplots
On Thu, Nov 26, 2009 at 12:09 AM, Titus Malsburg <malsburg at 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