[R] Package for phylogenetic tree analyses

From: lalitha viswanath <lalithaviswanath_at_yahoo.com>
Date: Fri 26 Jan 2007 - 21:38:02 GMT


Hi
I am looking for a package that
1. reads in a phylogenetic tree in NEXUS format 2. given two members/nodes on the tree, can return the distance between the two using the tree.

I came across the following packages on CRAN ouch, ape, apTreeShape, phylgr all of which seem to provide extensive range of functions for reading in a Nexus-format tree and performing phylogenetic analyses, tree comparisons etc, but none to the best of my undestanding seem to provide a function obtain distances (in terms of branch lengths) between two nodes on a single tree.
I am working with just one tree and need a function to return distances between various pairs of nodes on the tree.

Is there any other package out there that has this functionality?

Thanks for your responses to my earlier queries. As a beginning R programmer, your responses have been of utmost help and guidance.

Lalitha  


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