Description Usage Arguments Value Author(s) References

This function computes the balance of a phylogenetic tree, that is for each node of the tree the numbers of descendants (i.e. tips) on each of its daughter-branch. The tree must be fully dichotomous.

1 | ```
balance(phy)
``` |

`phy` |
an object of class |

a numeric matrix with two columns and one row for each node of the
tree. The columns give the numbers of descendants on each
daughter-branches (the order of both columns being arbitrary). If the
phylogeny `phy`

has an element `node.label`

, this is used as
rownames for the returned matrix; otherwise the numbers (of mode
character) of the matrix `edge`

of `phy`

are used as rownames.

Emmanuel Paradis

Aldous, D. J. (2001) Stochastic models and descriptive statistics for
phylogenetic trees, from Yule to today. *Statistical Science*,
**16**, 23–34.

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