On Thu, 17 Jul 2003, Peter Flom wrote:
> I have a tree created with
>
> tr.hh.logcas <- rpart(log(YCASSX + 1)~AGE+DRUGUSEY+SEX+OBSXNUM +WINDLE,
> xval = 10)
>
> I would like to label the nodes with YCASSX rather than log(YCASSX +
> 1). But the help file for text in library rpart says that you can only
> use labels that are part of x$frame, which YCASSX is not.
This may not be the best solution, but what I have done once is to add
another column into the data frame with the labels I want.
For example:
data(iris)
library(rpart)
# Recoding the response:
# s: setosa
# c: versicolor
# v: virginica
ir <- iris[, -5]
Species <- rep(c("s", "c", "v"), rep(50, 3))
ir <- as.data.frame(cbind(ir, Species))
ir.rp <- rpart(Species ~ ., data = ir)
plot(ir.rp)
text(ir.rp)
This is probably the long/silly way, but it works ;-D
--
Cheers,
Kevin
------------------------------------------------------------------------------
"On two occasions, I have been asked [by members of Parliament],
'Pray, Mr. Babbage, if you put into the machine wrong figures, will
the right answers come out?' I am not able to rightly apprehend the
kind of confusion of ideas that could provoke such a question."
-- Charles Babbage (1791-1871)
---- From Computer Stupidities: http://rinkworks.com/stupid/
--
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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