> I'd like to force rpart to use a specific variable, namely "spec" as > the first split and then allow it to proceed as usual. Is there a way > to do this?
You can often get this effect by using the "cost" argument. Make the variable in question have very low cost. Terry Therneau ______________________________________________ [email protected] 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.
