compute_times_ca: Comon Ancestors Times
Description
compute_times_ca computes the times t_ij between the root and the comon
ancestor of two tips i, j.
Usage
compute_times_ca(phy)
Arguments
phy
a phylogenetic tree of class phylo. Value
a matrix of times of shared evolutions, ordered as the tips of the
tree. The matrix is of type symmetricMatrix-class.