I am using rpart only once in a while. It has been changed and now I can't get my programs to work again... predict.rpart used to return posterior probabilities. Now the help function says it returns: "if type="vector": vector of predicted responses or, if the response is a factor, matrix of predicted class probabilities" Now I hoped "z <- rpart(as.factor(V1) ~ .,train,method="class",parms=list(prior=apriori,split='information')) new <- predict.rpart(z,test,type="vector")" would do the job, but it doesn't. I get predicted responses only. Trying "new <- predict.rpart(z,test,type="tree")" just to see whether I can use tells me "Error in predict.rpart(z, test, type = "tree") : Invalid prediction for rpart objects" What can I do? Ursula Sondhauss -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._