j_one: J^1 index.
In treestats: Phylogenetic Tree Statistics
j_one R Documentation
J^1 index.
Description
The J^1 index calculates the Shannon Entropy of a tree,
where at each node with two children, the Shannon Entropy is the sum of
p_i log_2(p_i) over the two children i, and p_i is
L / (L + R),
where L and R represent the number of tips connected to the two daughter
branches.
Usage
j_one(input_obj)
Arguments
input_obj
phylo object or ltable
Value
j^1 index
References
Jeanne Lemant, Cécile Le Sueur, Veselin Manojlović, Robert Noble,
Robust, Universal Tree Balance Indices, Systematic Biology, Volume 71,
Issue 5, September 2022, Pages 1210–1224
https://doi.org/10.1093/sysbio/syac027
treestats documentation built on Aug. 24, 2026, 5:09 p.m.
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| j_one | R Documentation |
J^1 index.
Description
The J^1 index calculates the Shannon Entropy of a tree,
where at each node with two children, the Shannon Entropy is the sum of
p_i log_2(p_i) over the two children i, and p_i is
L / (L + R),
where L and R represent the number of tips connected to the two daughter
branches.
Usage
j_one(input_obj)
Arguments
input_obj |
phylo object or ltable |
Value
j^1 index
References
Jeanne Lemant, Cécile Le Sueur, Veselin Manojlović, Robert Noble, Robust, Universal Tree Balance Indices, Systematic Biology, Volume 71, Issue 5, September 2022, Pages 1210–1224
https://doi.org/10.1093/sysbio/syac027
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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