Regression trees

Hi,
	I wonder whether anyone can tell me whether there are any
functions for classification and regression trees in R.  I am trying to
produce a regression tree based on a formula with a continuous response
and 3 covariates, including some factors.

The tree and rpart packages.

	-thomas


Thomas Lumley			Asst. Professor, Biostatistics
tlumley at u.washington.edu	University of Washington, Seattle
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