combine() is meant to be used on randomForest objects that were built from identical training data.
Andy > -----Original Message----- > From: r-help-boun...@r-project.org > [mailto:r-help-boun...@r-project.org] On Behalf Of Dennis Duro > Sent: Friday, December 10, 2010 11:59 PM > To: r-help@r-project.org > Subject: [R] randomForest: help with combine() function > > I've built two RF objects (RF1 and RF2) and have tried to combine > them, but I get the following error: > > Error in rf$votes + ifelse(is.na(rflist[[i]]$votes), 0, > rflist[[i]]$votes) : > non-conformable arrays > In addition: Warning message: > In rf$oob.times + rflist[[i]]$oob.times : > longer object length is not a multiple of shorter object length > > > Both RF models use the same variables, although the NAs in both models > likely differ (using na.roughfix in both models). I assume this is > part of the reason that my arrays are "non-conformable". If so, does > anyone have any suggestions on how to combine in such a situation? How > similar do RFs have to be in order to combine? > > Cheers > > ______________________________________________ > 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.