Re: [R] rpart question

2012-01-15 Thread Joshua Wiley
Hi Amanda, Sorry for the bit of a slow response (classes and research have been chaotic). Below are details on what I looked at and a few suggestions at the end for what you can do. To the general R community: summary.rpart() makes explicit the default dropping behavior of `[` which makes me thi

Re: [R] rpart question

2012-01-08 Thread Joshua Wiley
Hi Amanda, Can you reproduce the error with a small subset of the data? If so, could you send it to us? For instance if say 20 cases is sufficient, you could send the output of dput() which pastes easily into the console: dput(yourdata[, c("ENROLL_YN", "MINORITY")]) You could also try calling

[R] rpart question

2012-01-08 Thread Amanda Marie Elling
We are trying to make a decision tree using rpart and we are continually running into the following error: > fit_rpart=rpart(ENROLL_YN~MINORITY,method="class") > summary(fit_rpart) Call: rpart(formula = ENROLL_YN ~ MINORITY, method = "class") n= 5725 CP nsplit rel error 1 0 0 1