Removes splits that pertain only to a single taxon from a splits object.
DropSingleSplits(split)A matrix in which each column corresponds to a bipartition split
The input matrix, with any columns that separate only a single pendant tip removed.
Bipartition splits are divisions, implied by each edge or node of an unrooted tree topology, that divide the taxa into two groups (one of which is a clade).
By default, a list of splits will include those that separate a single taxon (a leaf) from all others. Such splits are, by definition, present in all trees that contain that taxon; they are not of interest when comparing trees. This function removes such splits from a list of bipartitions.