Can you provide a reproducible example and the results of sessionInfo()? What are the levels of your classes?
On Sat, Aug 27, 2011 at 10:43 PM, Jon Toledo <tintin...@hotmail.com> wrote: > > Dear developers, > I have jutst started working with caret and all the nice features it offers. > But I just encountered a problem: > I am working with a dataset that include 4 predictor variables in Descr and a > two-category outcome in Categ (codified as a factor). > Everything was working fine I got the results, confussion matrix etc. > BUT for obtaining the AUC and predicted probabilities I had to add " > classProbs = TRUE," in the trainControl. Thereafter everytime I run train I > get this message: > "undefined columns selected" > > I copy the syntax: > fitControl <- trainControl(method = "cv", number = 10, classProbs = > TRUE,returnResamp = "all", verboseIter = FALSE) > glmFit <- train(Descr, Categ, method = "glmStepAIC",tuneLength = 4,trControl > = fitControl) > Thank you. > Best regards, > > Jon Toledo, MD > > Postdoctoral fellow > University of Pennsylvania School of Medicine > Center for Neurodegenerative Disease Research > 3600 Spruce Street > 3rd Floor Maloney Building > Philadelphia, Pa 19104 > > [[alternative HTML version deleted]] > > ______________________________________________ > 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. > -- Max ______________________________________________ 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.
