find_descendant_edges {Claddis}

Gets descendant edges of an internal node

Description

Returns all descendant edges of an internal node for a phylo object.

Usage

find_descendant_edges(n, tree)

Arguments

n

An integer corresponding to the internal node for which the descendant edges are sought.

tree

A tree as a phylo object.

Details

Returns a vector of integers corresponding to row numbers in $edge or cells in $edge.length of the descendant edges of the internal node supplied.

Author(s)

Graeme T. Lloyd [e-mail]

Examples

# Create simple four-taxon tree:
tree <- ape::read.tree(text = "(A,(B,(C,D)));")

# Plot tree:
plot(tree)

# Show nodelabels:
nodelabels()

# Show edgelabels (note that edges 5 and 6
# are descendants of node 7):
edgelabels()

# Use find_descendant_edges to show that edges
# 5 and 6 are descendants of node 7:
find_descendant_edges(n = 7, tree = tree)