Phylogenetic Tree Statistics
Total internal path length
Stairs2 index
Total path length
Height of a tree.
Treeness statistic
Collection of phylogenetic tree statistics
Variance of external branch lengths of a tree, e.g. of branches leadin...
Variance of internal branch lengths of a tree, e.g. of branches not le...
Variance of branch lengths of a tree, including extinct branches.
Variance of leaf depth statistic
Variance of all pairwise distances.
Wiener index
Branching times of a tree
Area per pair index
Average leaf depth statistic. The average leaf depth statistic is a no...
Average ladder index
Average vertex depth metric
B1 metric
B2 metric
Aldous' beta statistic.
Blum index of (im)balance.
Apply all available tree statistics to a single tree
Apply all tree statistics related to branching times to a single tree.
Calculate all topology based statistics for a single tree
Cherry index
Corrected Colless index of (im)balance.
Quadratic Colless index of (im)balance.
Colless index of (im)balance.
Create a fully balanced tree
Create an unbalanced tree (caterpillar tree)
Crown age of a tree.
Diameter statistic
Double Cherry index
Eigen vector centrality
Intensive quadratic entropy statistic J.
Equal weights Colless index of (im)balance.
Four prong index
Gamma statistic
ILnumber
Imbalance steps index
J^1 index.
Convert an L table to phylo object
Symmetry nodes metric
Laplacian spectrum statistics, from RPANDA
Provides a list of all available statistics in the package
Convert an L table to newick string
Stepwise increase the imbalance of a tree
Maximum betweenness centrality.
Maximum closeness
Total cophenetic index.
Maximum difference of widths of a phylogenetic tree
Maximum depth metric
Maximum ladder index
Maximum width of branch depths.
Mean length of external branch lengths of a tree, e.g. of branches lea...
Mean length of internal branches of a tree, e.g. of branches not leadi...
Mean branch length of a tree, including extinct branches.
Reference nLTT statistic
Mean I statistic.
Mean Pairwise distance
Adjancency Matrix properties
Laplacian Matrix properties
Mean Nearest Taxon distance
Maximum width of branch depths divided by the maximum depth
Normalized LTT statistic
Number of tips of a tree, including extinct tips.
Function to generate an ltable from a phy object.
Phylogenetic diversity at time point t
Pigot's rho
Number of pitchforks
Phylogenetic Species Variability.
a function to modify an ltable, such that the longest path in the phyl...
Rogers J index of (im)balance.
Root imbalance
Rquartet index.
Sackin index of (im)balance.
Stairs index
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>.
Useful links