[R] xerror and xstd are missing from cptable of the Rpart package
Kim C.
minorthreatx at hotmail.com
Tue Feb 3 14:09:21 CET 2015
Hello all,
I'm making a decision tree with the rpart package. I want to prune the tree and in many tutorials it says to use cptable. Like so: opt <- which.min(model_rpart$cptable[, "xerror"])
The problem is that when I look up model_rpart$cptable it only show the columns CP, nsplit, rel error. So xerror and xstd are missing. How can this be?
Model looks like this: model <- rpart(Product~. , data=trainData, control=rpart.control(minsplit=50, cp=0.002, xval=0))
Thank you.
Kim
[[alternative HTML version deleted]]
More information about the R-help
mailing list