[R] R packages/code for CART that is written entirely in R (not C)

[David Winsemius]

> On Nov 11, 2015, at 9:25 AM, Andrew Crane-Droesch <andrewcd at gmail.com> wrote:
> 
> Dear List,
> 
> I'd like to make a few modifications to the typical CART algorithm, and 
> I'd rather not code the whole thing from scratch.  Specifically I want 
> to use different in-sample and out-of-sample fit criteria in the split 
> choosing and cross-validation stages.
> 
> I see however that the code for CART in both the rpart and the tree 
> packages is written in C.
> 
> Two questions:
> 
>  * Where is the C code?  It might be possible to get a C-fluent
>    programmer to help me with this.
>  * Is there any code for CART that is written entirely in R?

Read: "R Help Desk: Accessing the Sources” by Uwe Ligges in:

https://www.r-project.org/doc/Rnews/Rnews_2006-4.pdf

The current sources are here:

https://svn.r-project.org/R/trunk/


> 
> Thanks,
> Andrew
> 
> 	[[alternative HTML version deleted]]

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— 
David Winsemius
Alameda, CA, USA