Hi R-helpers, I am using rpart package for decision tree using R.We are invoking R environment through JRI from our java application.Hence, the result of R command is returned in REXP and we use geterrMessage() to retrieve the error.
When we execute the following command, cnr_model<-rpart(as.factor(Species)~Sepal Length+Sepal Width+Petal Length, method="class", parms=list(split="gini",prior=c()), control=rpart.control(minsplit=2, na.action=na.pass,cp=0.001,usesurrogate=1,maxsurrogate=2,surrogatestyle=0,maxdepth=20,xval=10)) we get an error message* "Error: unexpected symbol in "a<-cnr_model<-rpart(as.factor(Species)~Sepal Length""* The REXP returned in not null and the geterrMessage() call doesnt return an error message. But for other errors in R , say "summary(cnr_model)" , REXP returned is null and we get the following error message from geterrMessage() call. *Error in summary(cnr_model) : object 'cnr_model' not found* Is this behavior of showing error message specific to rpart package ? Why is this difference in the way error message is displayed in rpart package?Can you please let us know how to retrieve error messages of rpart command through JRI? Thanks in advance. -- View this message in context: http://r.789695.n4.nabble.com/rpart-error-message-tp4528104p4528104.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org 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.
