[R] Rpart decision tree

[Achim Zeileis]

On Fri, 8 Apr 2011, tudor wrote:

> Dear useRs:
>
> I try to plot an rpart object but cannot get a nice tree structure plot.  I
> am using plot.rpart and text.rpart (please see below) but the branches that
> connect the nodes overlap the text in the ellipses and rectangles.  Is there
> a way to get a clean nice tree plot (as in the Rpart Mayo report)?  I work
> under Windows and use R2.11.1 with rpart version 3.1-46.

You could check out whether you like the plots generated in the "party" 
package better. See example("ctree", package = "party").

If you like the plots but don't want to use ctree() instead of rpart():
Then you could install the "partykit" package from R-Forge and then do
plot(as.party(...)) for your "rpart" object.

hth,
Z

> Thank you.
>
> Tudor
>
> ...
> plot(cart, uniform=TRUE, branch=0.25, compress=TRUE, margin=0.25)
> text(cart, use.n=TRUE, all=TRUE, fancy=TRUE, fheight=0.95)
> ...
>
>
> --
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