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
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