Node depth

Determine the depth of a particular node in a tree, defined as the number of edges between it and the root. (So the root has depth zero, its children have depth one, etc.)

nodeDepth(tree, node)

Arguments

tree

a tree of class phylo or phylo4. The tree should be binary and rooted; if not it will be coerced into a binary rooted tree using multi2di, if possible.

node

a number corresponding to a node in the tree.

Value

An integer corresponding to the depth of the given node.

Author

Michelle Kendall michelle.louise.kendall@gmail.com

Examples

## Find the depth of node 34 in a random tree with 20 tips:
tree <- rtree(20)
plot(tree)
nodelabels()

nodeDepth(tree,34)
#> [1] 3