[R] randomForest help

[Liaw, Andy]

What software are you using, exactly?  I'm the maintainer of the
randomForest package, yet I do not know which "manual" you are quoting.

If you are using the randomForest package, the model object can be saved
to a file by save(Rfobject, file="myRFobject.rda").  If you need that to
be in ascii, use ascii=TRUE in save().  You can get it back into R by
using load() or attach().

To "run data down the model", use predict(Rfobject, datatopredict) (see
?predict.randomForest).

What exactly do you want to print to a csv file, the prediction?  See
?write or ?write.table.

Andy

From: Jennifer Dawn Watts
 
> 
> Hello!  As a new R user, I'm sure this will be a silly 
> question for the 
> rest of you.   I've been able to successfully run a forest but yet to 
> figure out proper command lines for the following: 
> 1. saving the forest.  The guide just says isavef=1.  I'm unsure how 
> expand on this to create the command.
> 2. Running new data down the mode.  Again, the guide just states irunf
> 3. Print to file.     I need to be able to export this data to a cvs 
> file, to then incorporate into an Arc shapefile.  The manual 
> just says 
> ntestout.
> 
> Again, I feel like these should be easy steps that I just 
> can't relate 
> to as a beginner.  Any advice would be greatly appreciated. 
> 
> Thanks,
> 
> Jenny
> 
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