Dear all, I'm trying to compare trees from different methods and originating from different genes (thus different lengths of sequences). Problem is that I can't really use the branch lengths, as they mean different things. If I calculate the geodesic distance between those trees, I need to make sure all branch lengths are interpreteable on the same scale. Therefor I want to normalize the branch lengths, but I can't find a function to do that, nor one to clock the tree. Anybody an idea? Cheers Joris -- Joris Meys Statistical Consultant Ghent University Faculty of Bioscience Engineering Department of Applied mathematics, biometrics and process control Coupure Links 653 B-9000 Gent tel : +32 9 264 59 87 Joris.Meys@Ugent.be ------------------------------- Disclaimer : http://helpdesk.ugent.be/e-maildisclaimer.php [[alternative HTML version deleted]]