[R] how to construct tree under R

Ko-Kang Kevin Wang kwan022 at stat.auckland.ac.nz
Sat May 17 22:10:24 CEST 2003


On Sat, 17 May 2003, ANA KOZOMARA wrote:

> I have a hudge problem, don't know how to deal with it...
> I'm supposed to implement a tree structure in R, without using
> rpart library...

I'm not sure what exactly you want here.  If you want to write a function 
that uses some kind of algorithms on decision trees (e.g. CART) then you 
will have to consult some technical books.

If you are just working on a practical problem, i.e. you have got a data 
set and just want to get a tree from it, then the tree or rpart package 
are two of the packages you can use (and you can consult "Modern Applied 
Statistics with S" by Venables and Ripley, 2002).  I am not sure why you 
do not want to use the rpart package, but the tree package has some very 
good documentation which you can read and find out how to use it.  



/* Time is the greatest teacher, unfortunately it kills its students */

Ko-Kang Kevin Wang
Master of Science (MSc) Student
SLC Tutor and Lab Demonstrator
Department of Statistics
University of Auckland
New Zealand
Homepage: http://www.stat.auckland.ac.nz/~kwan022
Ph: 373-7599
    x88475 (City)
    x88480 (Tamaki)

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