Description Usage Arguments Value References Examples
This calculates σ^2_M, a measure of asymmetry based on the topological distance, $M_i$, between tip $i$ and the root:
σ^2_M = \frac{1}{N} ∑_{i \in \mathcal{L}} {(M_i-M)^2} .
1 | varM(tree)
|
tree |
A tree of class |
An object of class numeric
.
Pompei S, Loreto V, Tria F (2012) Phylogenetic Properties of RNA Viruses. PLoS ONE 7(9): e44849. doi:10.1371/journal.pone.0044849
Sackin MJ (1972) Good and bad phenograms. Systematic Biology 21: 225-226.
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