[R] How to draw the decision boundaries for LDA and Rpart object
Prof Brian Ripley
ripley at stats.ox.ac.uk
Wed Aug 9 09:04:55 CEST 2006
On Wed, 9 Aug 2006, Am Stat wrote:
> Hello useR,
> Could you please tell me how to draw the decision boundaries in a
> scatterplot of the original data for a LDA or Rpart object.
There are examples in MASS (the book).
> For example:
> > library(rpart)
> >fit.rpart <- rpart(as.factor(group.id)~., data=data.frame(Data) )
> How can I draw the cutting lines on the orignial Data?
> Or is there any built in functions that can read the rpart object
> 'fit.rpart' to do that?
See partition.tree in package tree.
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
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)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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