entropy_j

The intensive quadratic entropy statistic J is given by the
average distance between two randomly chosen species, thus given by the
sum of all pairwise distances, divided by S^2, where S is the number of tips
of the tree.

Collection of phylogenetic tree statistics,
collected throughout the literature. All functions have been
written to maximize computation speed. The package includes
umbrella functions to calculate all statistics, all balance
associated statistics, or all branching time related statistics.
Furthermore, the 'treestats' package supports summary statistic
calculations on Ltables, provides speed-improved coding of
branching times, Ltable conversion and includes algorithms to
create intermediately balanced trees. Full description can be
found in Janzen (2024) <doi:10.1016/j.ympev.2024.108168>.

Thijs Janzen

treestats

Phylogenetic Tree Statistics

entropy_j function

<dl><dt>phy</dt>
<dd>phylo object or ltable</dd></dl>

Arguments

Intensive quadratic entropy statistic J. — entropy_j

<dl>

<dt>phy</dt>
<dd>phylo object or ltable</dd>

</dl>

entropy_j: Intensive quadratic entropy statistic J.

Description

Usage

Value

Arguments

References