R: Get the MRCA of a set of taxa

findMRCA {phytools}

R Documentation

Get the MRCA of a set of taxa

Description

This function returns the most recent common ancestor (node number) for a set of taxa. If tips=NULL will be redundant with mrca (for type="node") or vcv.phylo, but much slower (for type="height").

Usage

findMRCA(tree, tips=NULL, type=c("node","height"))

Arguments

`tree`	a phylogenetic tree as an object of class `"phylo"`.
`tips`	a vector containing a set of tip labels.
`type`	either `"node"` to return the node of the MRCA; or `"height"` to return the height above the root of the MRCA of `tips`.

Details

If tips==NULL will return the result of a normal function call to mrca. If tips=NULL will return a matrix equal to vcv.phylo.

Value

The node number of the MRCA, or a matrix of node numbers (if tips==NULL) - for type="node"; or the height of the MRCA, or a matrix of heights (if tips==NULL) - for type="height".

Author(s)

Liam Revell liam.revell@umb.edu

References

Revell, L. J. (2012) phytools: An R package for phylogenetic comparative biology (and other things). Methods Ecol. Evol., 3, 217-223.

Examples

tree<-pbtree(n=20)
anc<-findMRCA(tree,c("t1","t10","t15"))

[Package phytools version 0.4-60 Index]