many thanks - that's perfect, excluding records on a rep-by-rep basis is what I was just hoping for but I probably didn't explain myself that well!
James -- View this message in context: http://r.789695.n4.nabble.com/predict-an-rpart-model-how-to-ignore-missing-levels-in-a-factor-tp3049218p3050670.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.
