ape2ouch translates ape's phylo representation of a phylogenetic tree into ouch's ouchtree representation.
The user can change the branch lengths while preserving the topology.
ape2ouch(tree, scale = TRUE, branch.lengths = tree$edge.length)a tree of class phylo created in package ape.
if scale=TRUE, the tree's depth will be scaled to 1.
If scale is a number, then the branch lengths will be scaled by this number.
optional vector of branch lengths.