The total cophenetic index is the sum of the depth of the last
common ancestor of all pairs of leaves.
Usage
tot_coph(phy, normalization = "none")
Value
Total cophenetic index
Arguments
phy
phylo object or ltable
normalization
"none" or "yule", when "yule" is chosen, the statistic
is divided by the Yule expectation
References
A. Mir, F. Rosselló, and L. Rotger. A new balance index for
phylogenetic trees. Mathematical Bio-sciences, 241(1):125-136, 2013.
doi: 10.1016/j.mbs.2012.10.005.