find_descendant_edges: Gets descendant edges of an internal node
In Claddis: Measuring Morphological Diversity and Evolutionary Tempo

Description Usage Arguments Details Author(s) Examples

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

1	find_descendant_edges(n, tree)

`n`	An integer corresponding to the internal node for which the descendant edges are sought.
`tree`	A tree as a phylo object.

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.

Graeme T. Lloyd graemetlloyd@gmail.com

# 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)