R help - Mar 2011 - predict.rpart help

Hi Everyone,

Is there a way to get predict.rpart() to return the nodes reached by the new
examples in addition to the predicted probabilities it already returns? In other
words, I would like to know the leaf node in the tree object that each new
example data drops down to.

Thanks in advance for your help.

Osei

Hi Everyone,

Is there a way to get predict.rpart() to return the nodes reached by the new
examples in addition to the predicted probabilities it already returns? In other
words, I would like to know the leaf node in the tree object that each new
example data drops down to.

Thanks in advance for your help.

Osei

Make your own copy of predict.rpart:
  mypredict <- rpart:::predict.rpart
(Even better to grab the source code version, then you can start with  a
copy that has comments in it!)

Edit it to add type='where': about 1/3 of the way down you will see that
the routine has computed a variable "where"; that is what you want to
return.

Terry T.

---------- begin included message ----------

Is there a way to get predict.rpart() to return the nodes reached by the
new examples in addition to the predicted probabilities it already
returns? In other words, I would like to know the leaf node in the tree
object that each new example data drops down to.

Thanks in advance for your help.