Rules: Extract Rules from 'rpart' Object

In ModTools: Tools for Building Regression and Classification Models

Description

Extract rules from an rpart object. This can be useful, if the rules must be implemented in another system. The rules contain all the criteria for the binary splits of an rpart tree from the root node down to the specified leaf.

Usage

Rules(x, node = NULL, leafonly = FALSE)

Arguments

x	the rpart object to extract the rules from
node	integer vector, defining the nodes whose details are required.
leafonly	boolean, defining if only the rules leading to end nodes ("leafs") should be returned.

Details

The function builds upon the original function path.rpart, which is bulky in some situations.

Value

a list with the rules

frame	the frame of the rpart
ylevels	the y values of the node
ds.size	the size of the dataset
path	a list of character vecotrs containing the rules

Author(s)

Andri Signorell <[e-mail]>

See Also

rpart, path.rpart

Examples

r.rp <- FitMod(diabetes ~ ., data=d.pima, fitfn="rpart")
Rules(r.rp)

ModTools documentation built on July 26, 2021, 9:06 a.m.