corMartins

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Percentile

Martins's (1997) Correlation Structure

Martins and Hansen's (1997) covariance structure: $$V_{ij} = \gamma \times e^{-\alpha t_{ij}}$$ where $t_{ij}$ is the phylogenetic distance between taxa $i$ and $j$ and $\gamma$ is a constant.

Keywords
models
Usage
corMartins(value, phy, form = ~1, fixed = FALSE)
## S3 method for class 'corMartins':
coef(object, unconstrained = TRUE, ...)
## S3 method for class 'corMartins':
corMatrix(object,
		covariate = getCovariate(object), corr = TRUE, ...)
Value

An object of class corMartins or the alpha coefficient from an object of this class or the correlation matrix of an initialized object of this class.

References

Martins, E. P. and Hansen, T. F. (1997) Phylogenies and the comparative method: a general approach to incorporating phylogenetic information into the analysis of interspecific data. American Naturalist, 149, 646--667.

See Also

corClasses.

Aliases
Documentation reproduced from package ape, version 3.0-2, License: GPL (>= 2)

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