[R] is then an equivalent of partition.tree for rpart?

[Prof Brian Ripley]

On Mon, 7 Jan 2002, David Marimont wrote:

> partition.tree plots in 2d the partition of a classification tree produced by the function
> tree (assuming the data frame from which it was computed has two continuous predictors).
> I get an error when I feed a tree produced by rpart to partition.tree (since trees
> produced by rpart are superclasses of those produced by tree).  Is there an equivalent of

They are not a superclass.  The help page is I think out of date on this.
There used to be a function as.tree, but that has gone I see.

> partition.tree for objects of class rpart?  Actually, what I'd really like is one that
> worked for any number of continuous predictors, but let me choose which two to plot.  Thanks.

That's not really possible.  You can't plot the partition in a 2D space
unless only two vars are involved, and partition.tree checks that out.

>    David Marimont
>    NXP Data Analysis, Inc.
>    http://www.nxpdata.com
>
> P.S.  All terminology is approximate.  Corrections welcome.
>
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-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
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