Test for Binary Tree
This function tests whether a phylogenetic tree is binary, i.e. whether every node (including the root node) has exactly two descendant nodes. In this case the number of edges in the tree equals 2 n - 2 where n is the number of taxa (tips) in the tree.
is a fully binary phylogenetic tree, otherwise it returns
data("hivtree.newick") # example tree in NH format tree.hiv <- read.tree(text = hivtree.newick) # load tree is.binary.tree(tree.hiv) plot(tree.hiv) unlink("hivtree.phy") # delete the file "hivtree.phy"