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Which versions of randomForest are you using in S-PLUS and R? Which version of R are you using? When you restore the object into R, what does str(object) say? Have you also tried dump()/source() as the R Data Import/Export manual suggests? Andy > -----Original Message----- > From: r-help-boun...@r-project.org > [mailto:r-help-boun...@r-project.org] On Behalf Of Zhiming Ni > Sent: Tuesday, August 02, 2011 8:11 PM > To: r-help@r-project.org > Subject: [R] convert a splus randomforest object to R > > Hi, > > I have a randomforest object "cost.rf" that was created in splus 8.0, > now I need to use this trained RF model in R. So in Splus, I > dump the RF > file as below > > data.dump("cost.rf", file="cost.rf.txt", oldStyle=T) > > then in R, restore the dumped file, > > library(foreign) > > data.restore("cost.rf.txt") > > it works fine and able to restore the "cost.rf" object. But when I try > to pass a new data through this randomforest object using predict() > function, it gives me error message. > > in R: > > library(randomForest) > set.seed(2211) > > pred <- predict(cost.rf, InputData[ , ]) > > Error in object$forest$cutoff : $ operator is invalid for > atomic vectors > > > Looks like after restoring the dump file, the object is not compatible > in R. Have anyone successfully converted a splus randomforest > object to > R? what will be the appropriate method to do this? > > Thanks in advance. > > Jimmy > > ========================================== > This communication contains information that is confidential, > and solely for the use of the intended recipient. It may > contain information that is privileged and exempt from > disclosure under applicable law. If you are not the intended > recipient of this communication, please be advised that any > disclosure, copying, distribution or use of this > communication is strictly prohibited. Please also immediately > notify SCAN Health Plan at 1-800-247-5091, x5263 and return > the communication to the originating address. > Thank You. > ========================================== > > [[alternative HTML version deleted]] > > ______________________________________________ > 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. > Notice: This e-mail message, together with any attachme...{{dropped:11}} ______________________________________________ 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.
