phytools (version 0.4-21)

strahlerNumber: Computes Strahler number for trees and nodes

Description

The function strahlerNumber computes the Strahler number of all nodes and tips in the tree. For more information about Strahler numbers see http://en.wikipedia.org/wiki/Strahler_number. The function extract.strahlerNumber extracts all of the most inclusive clades of Strahler number i.

Usage

strahlerNumber(tree, plot=TRUE)
extract.strahlerNumber(tree, i, plot=TRUE)

Arguments

tree

an object of class "phylo".

i

order of Strahler number to extract for extract.strahlerNumber.

plot

logical value indicating whether to plot the tree with Strahler numbers for node labels.

Value

• Either a vector with the Strahler number for each tip and internal node; or (for extract.strahlerNumber the set of (most inclusive) subtrees with Strahler number i as an object of class "multiPhylo".