Wolfram Fischer wrote: > What is the reason, that the levels of the factor > returned by cut() are not marked as ordered levels? > > >> is.ordered( cut( breaks=3, sample(10 ) ) ) >> > FALSE > > It would arguably be the Right Thing, but there would be complications in modeling, where ordered factors result in polynomial contrast coding. (This, in my opinion, is a design mistake inherited from S, but it's not easy to change at this stage.) >> help(factor) >> > ... > If 'ordered' is 'TRUE', the factor levels are assumed to be ordered. > ... > > Wolfram > > ______________________________________________ > R-help@stat.math.ethz.ch 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. >
-- 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@stat.math.ethz.ch 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.
