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phytools (version 2.3-0)

likMlambda: Likelihood for joint \(\lambda\)

Description

Likelihood function for joint estimation of Pagel's \(\lambda\) parameter.

Usage

likMlambda(lambda, X, C)

Value

The log-likelihood.

Arguments

lambda

scalar, usually on the interval 0,1 (although not required to be).

X

data for various continuous character, in the form of a matrix.

C

n x n matrix (for n taxa) containing the height above the root for each pair of taxa in the tree (e.g., vcv.phylo).

Author

Liam Revell liam.revell@umb.edu

Details

Generally intended to be used internally by other methods that do joint optimization of \(\lambda\) (e.g., phyl.pca).

References

Revell, L. J. (2024) phytools 2.0: an updated R ecosystem for phylogenetic comparative methods (and other things). PeerJ, 12, e16505.