[R] randomForest and ordered factors

[Birgit Lemcke]

Hello R-user!

I am running R 2.7.0 on a Power Book (Tiger). (I am still R and  
statistics beginner)

I try to find the most important variables to divide my dataset as  
given in a categorical variable.

code:

Test.rf4<-randomForest(Sex~.,na.action=na.roughfix, data=Subset4,  
importance=TRUE, proximity=TRUE, ntree=10000, do.trace=1000,  
keep.forest=FALSE)

My dataset contains also ordered factors classified as such.
Is randomForest able to deal with it, does it change anything or is  
there no difference in using factors or ordered factors?

Many thanks in advance

B.

Birgit Lemcke
Institut für Systematische Botanik
Zollikerstrasse 107
CH-8008 Zürich
Switzerland
Ph: +41 (0)44 634 8351
birgit.lemcke at systbot.uzh.ch

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