R help - Oct 2008 - Dump decision trees of randomForest object

Hi,

I'm using the package randomForest to generate a classifier for the
exemplary
iris data set:

data(iris)
iris.rf<-randomForest(Species~.,iris)

Is it possible to print all decision trees in the generated forest?
If so, can the trees be also written to disk?

What I actually need is to translate the decision trees in a random forest
into equivalent C++ if-then-else constructs to integrate them in a C++
project. Have this been done in the past and are there already any
implemented approaches/parser for that?

Cheers,
Chris
--

See the getTree() function in the package.  Also, the source package
contains C code that does the prediction that you may be able to work
from.

Andy 

From: Christian Sturz
> 
> Hi,
> 
> I'm using the package randomForest to generate a classifier 
> for the exemplary
> iris data set:
> 
> data(iris)
> iris.rf<-randomForest(Species~.,iris)
> 
> Is it possible to print all decision trees in the generated forest?
> If so, can the trees be also written to disk?
> 
> What I actually need is to translate the decision trees in a 
> random forest
> into equivalent C++ if-then-else constructs to integrate them in a C++
> project. Have this been done in the past and are there already any
> implemented approaches/parser for that?
> 
> Cheers,
> Chris
> --
> 
> ______________________________________________
> R-help at 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:12}}