nodeGroups {MSCquartets}

Groups taxa by deleting a node in a tree

Description

Finds groups of taxa determined by the connected components of the graph resulting from deleting an internal node in a tree.

Usage

nodeGroups(tree, nodeNum)

Arguments

tree

a tree, of class "phylo"

nodeNum

a node number, representing an internal node in the phylo representation

Details

When applied to a rooted tree, the last group returned is the set of tips that are non-descendants of the node (provided any exist).

Value

a list of lists of tree tip numbers for each group. The union of the groups is the set of all tips.

Examples

 tree=read.tree(text="((a,b),((c,d,e),(f,g)));")
 nodeGroups(tree,8)
 nodeGroups(tree,10)
 nodeGroups(tree,11)