rpart2gNEL {RbcBook1}R Documentation

convert an rpart object to a graphNEL instance

Description

Usage

rpart2gNEL(tr, remap=function(x) x, nsep="\n")

Arguments

tr instance of rpart class from rpart package
remap function that maps node names in tree to node names in graph
nsep token that separates node name and vote tally in the rendering

Details

Not explicitly used in the book, but the basis for a certain graph illustrating application of rpart. The newer coin/party packages have more interesting rendering approaches based on graphviz.

grabSplitV is a utility function for acquiring the variable names, remapAff will remap affymetrix probe names to gene symbols for use in the remap parameter

Value

a graphNEL-class instance with nodes constructed to convey information on the data tree fit

Author(s)

Vince Carey <stvjc@channing.harvard.edu>

Examples

library(rpart)
example(rpart)
ff = rpart2gNEL(fit2)
ff
nodes(ff)

[Package RbcBook1 version 1.6.0 Index]