vcv.phylo

0th

Percentile

Phylogenetic Variance-covariance or Correlation Matrix

This function computes the expected variances and covariances of a continuous phenotype assuming it evolves under a given model (currently only the model of Brownian motion is available).

Keywords
multivariate, manip
Usage
vcv.phylo(phy, model = "Brownian", cor = FALSE)
Arguments
phy
an object of class "phylo".
model
a character giving the model used to compute the variances and covariances of the phynotype; by default "Brownian". Currently only the Brownian model is available.
cor
a logical indicating whether the correlation matrix should be returned (TRUE); by default the variance-covariance matrix is returned (FALSE).
Value

  • a numeric matrix with the names of the tips (as given by the tip.label of the argument phy) as colnames and rownames.

References

Garland, T. Jr. and Ives, A. R. (2000) Using the past to predict the present: confidence intervals for regression equations in phylogenetic comparative methods. American Naturalist, 155, 346--364.

See Also

read.tree to read tree files in Newick format

Aliases
  • vcv.phylo
Documentation reproduced from package ape, version 2.1-1, License: GPL (>= 2)

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