The attach function only attachs a copy of the data (changes to the data don't show up in the attached copy). Also you need to tell R what to do with the result of as.ordered (where to save it).
Try something like: > table$V3 <- as.ordered(table$V3) Or > table <- transform(table, V3=as.ordered(V3) ) Hope this helps, -- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare [EMAIL PROTECTED] (801) 408-8111 > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Birgit Lemcke > Sent: Thursday, August 23, 2007 11:28 AM > To: R Hilfe > Subject: [R] ordered factors in data.frame > > Hello I need a tiny peace of help. (PPC Mac Os X 10.4.10; R 2.5.1) > > I have a data.frame with numeric and factor variables. > I would like to convert same of the factors to ordered factors. > > I tried with: > > attach (table) > > as.ordered (V3) > > but this gives me only the V3 Vector as ordred back but in > the data.frame (str(Table)) it is still not ordered. > > How can I do that? > > Thanks for your help. > > I am still a beginner. > > Greetings > > Birgit > > Now I would like to > Birgit Lemcke > Institut für Systematische Botanik > Zollikerstrasse 107 > CH-8008 Zürich > Switzerland > Ph: +41 (0)44 634 8351 > [EMAIL PROTECTED] > > > > > > > [[alternative HTML version deleted]] > > ______________________________________________ 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.
