last.node.of.subtree: Internal Function that finds the Last Node of Subtrees
In oblique.tree: Oblique Trees for Classification Data

Description Usage Arguments Details Value Author(s) Examples

Returns the node number of the last node of a rooted subtree.

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last.node.of.subtree(
	tree, 
	subtree.root.name)

`tree`	An object of class `tree`.
`subtree.root.name`	The name of the root of the subtree.

Knowing the node numbers of both the root node (of a subtree) and the last node of such a subtree is sufficient to isolate all nodes from this rooted subtree (as node are numbered in a recursive manner, left first then right).

The node number of the last node of a rooted subtree.

A. Truong

#grow a tree on the Pima Indian dataset
data(Pima.tr, package = "MASS")
ob.tree <- oblique.tree(formula		= type~.,
			data		= Pima.tr,
			oblique.splits	= "on")
plot(ob.tree);text(ob.tree);title(main="Oblique Tree")

#what is the node number of the last node of the entire tree?
oblique.tree:::last.node.of.subtree(
	tree			= ob.tree, 
	subtree.root.name	= 1)

#what is the node number of the last node of the subtree rooted at the node with name '4'?
oblique.tree:::last.node.of.subtree(
	tree			= ob.tree, 
	subtree.root.name	= 4)