> On Nov 11, 2015, at 9:25 AM, Andrew Crane-Droesch <andre...@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]] For future questions, this is a plain text mailing list. > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. — David Winsemius Alameda, CA, USA ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
