treeSlice: Slices the tree at a particular point and returns all subtrees
Description
This function slices a tree at a particular height above the root and returns all subtrees or all non-trivial subtrees (i.e., subtrees with more than 1 taxon). Uses extract.clade in the "ape" package.
Usage
treeSlice(tree, slice, trivial=FALSE)
Arguments
tree
is a phylogenetic tree in "phylo" format.
slice
a real number indicating the height above the root at which to slice the tree.
trivial
a logical value indicating whether or not to return subtrees with a number of tips less than two (default is FALSE).