John Fox wrote: > Dear Peter and Iksmax, > > To elaborate slightly, the Rcmdr tries to figure out which menu items are > appropriate in a given context, and as Peter says, requires that you have at > least one factor in the active dataset before activating the pie chart menu > item; only factors will be included in the pie-chart dialog variable list. I > suppose that this approach sometimes makes it more difficult than necessary > to do some things that people legitimately want to do, but the idea is to > protect students in introductory statistics courses -- the target audience > for the Rcmdr -- from doing foolish things. (If I were really "holier than > the prophet" I would have omitted pie charts entirely!) > > Perhaps stating the obvious: That remark was intended as tongue-in-cheek....
Apart from protecting people from doing foolish things (there's a famous quote about that, though), there's also the aspect that an interface gets simpler if you reduce the number of choices. So of course it is a valid design decision. -p -- 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.
