get_trees: extract a phylogenetic tree from the nexml
Description
extract a phylogenetic tree from the nexml
Usage
get_trees(nexml)
Value
an ape::phylo tree, if only one tree is represented.
Otherwise returns a list of lists of multiphylo trees.
To consistently receive the list of lists format (preserving
the hierarchical nature of the nexml), use get_trees_list instead.
Arguments
nexml
a representation of the nexml object from
which the data is to be retrieved