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Returns all descendant edges of an internal node for a phylo object.
find_descendant_edges(n, tree)An integer corresponding to the internal node for which the descendant edges are sought.
A tree as a phylo object.
Graeme T. Lloyd graemetlloyd@gmail.com
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.
# 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)
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