Description Usage Arguments Value Author(s) Examples

Finds the Colless number for a tree.
Note that the package `apTreeshape`

has a function `colless`

to compute the Colless imbalance with additional options to normalise it based on the model;
we include this simple function here for convenience within this package, and for use on objects of class `phylo`

and `phylo4`

.

1 | ```
colless.phylo(tree, normalise = TRUE)
``` |

`tree` |
a tree of class |

`normalise` |
option to normalise the result by dividing by the number of tip pairs. Defaults to |

The Colless imbalance number of the tree.

Michael Boyd [email protected]

Michelle Kendall [email protected]

1 2 3 4 | ```
## Find the Colless imbalance of a random tree with 10 tips:
tree <- rtree(10)
plot(tree)
colless.phylo(tree)
``` |

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