Kcalc: K statistic of phylogenetic signal
In picante: R tools for integrating phylogenies and ecology

Description Usage Arguments Value Author(s) References See Also Examples

Calculates K statistic of phylogenetic signal

1	Kcalc(x, phy, checkdata=TRUE)

`x`	Vector or data.frame of trait data (in phylo\$tip.label order)
`phy`	phylo object
`checkdata`	Check for match between trait and phylogeny taxa labels using `match.phylo.data`? (default=TRUE)

`K`	K statistic

Simon Blomberg <s.blomberg1@uq.edu.au> and David Ackerly <dackerly@berkeley.edu>

Blomberg, S. P., and T. Garland, Jr. 2002. Tempo and mode in evolution: phylogenetic inertia, adaptation and comparative methods. Journal of Evolutionary Biology 15:899-910.

Blomberg, S. P., T. Garland, Jr., and A. R. Ives. 2003. Testing for phylogenetic signal in comparative data: behavioral traits are more labile. Evolution 57:717-745.

phylosignal

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randtree <- rcoal(20)
randtraits <- rTraitCont(randtree)
Kcalc(randtraits[randtree$tip.label],randtree)

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[1,] 0.5740567