B1: B1

In bdearlove/treeImbalance: Imbalance metrics for time-sampled phylogenetic trees.

Description

This calculates B1 for a phylogenetic tree. For each internal node j, we consider the leaf with the largest topological distance Z_j. Then,

B_1 = ∑_{j \in \mathcal{I}-root} {Z_j^{-1} }.

Usage

B1(tree)

Arguments

tree	A tree of class phylo or treeshape.

Value

An object of class numeric.

References

• Pompei S, Loreto V, Tria F (2012) Phylogenetic Properties of RNA Viruses. PLoS ONE 7(9): e44849. doi:10.1371/journal.pone.0044849

• Shao K, Sokal R (1990) Tree balance. Systematic Zooology 39: 266-276

Examples

N=30
tree<-rtreeshape(1,tip.number=N,model="pda")[[1]]
B1(tree)

bdearlove/treeImbalance documentation built on May 12, 2019, 3:39 a.m.