Re: [R] xerror and xstd are missing from cptable of the Rpart package

Kim, The "x" in "xerror" and "xstd" stands for cross validation. But you have specified no cross validations, xval=0. Try: model <- rpart(Product ~ ., data=trainData, control=rpart.control(minsplit=50, cp=0.002)) model$cptable Jean On Tue, Feb 3, 2015 at 7:09 AM, Kim C. wrote: > Hello all,

[R] xerror and xstd are missing from cptable of the Rpart package

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.