lambda.transform {phytools}

\lambda transformation of matrix

Description

Internal function for phyl.pca and others.

Usage

lambda.transform(lambda, C)

Arguments

lambda

scalar, usually (but not necessarily) on the interval 0,1.

C

matrix probably returned by vcv.phylo.

Details

Multiplies the off-diagonals of a square matrix by lambda and returns the result.

Value

Typically an among-species phylogenetic variance covariance matrix (e.g., vcv.phylo) in which the off-diagonal elements have been multiplied by lambda.

Author(s)

Liam Revell [e-mail]

References

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