nodeImb: Node imbalance

Description Usage Arguments Value Author(s) See Also Examples

View source: R/nodeImb.R

Description

For a given node, this function gives the number of tips descending from each of its two children, as a measure of imbalance.

Usage

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nodeImb(tree, node)

Arguments

tree

a tree of class phylo or phylo4. The tree should be binary and rooted; if not it will be coerced into a binary rooted tree using multi2di, if possible.

node

a node index between 1 and 2n-1, where n is the number of tips in the tree.

Value

Two integers corresponding to the number of tip descendants of each of the node's two children. If the node is itself a tip, then the vector (0,0) will be returned.

Author(s)

Michelle Kendall [email protected]

See Also

treeImb

Examples

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## Find the imbalance of node 16 in a random tree with 10 tips:
tree <- rtree(10)
plot(tree)
nodelabels()
nodeImb(tree,16)

phyloTop documentation built on Feb. 22, 2018, 1:03 a.m.