Damienet al. --
> Thanks a lot for the answer Joe! > However, I think you need to have species average for using methods like > independent contrasts and PGLS right? How would you do it for a trajectory > or series of specimens per species? > I not quite sure about the trajectory issue. However for samples from each species, when one does not have precise population means, one has to ask how phylogenetic comparative methods cope with that. The relevant papers are by Ives, Midford and Garland (Evolution, 2007) and of course best of all my own 2008 paper in American Naturalist. Alas, it is not just a matter of getting contrasts and then treating those as independent. I have options in my PHYLIP program Contrast that can do this case. "Trajectory", I'm less sure. Joe ---- Joe Felsenstein [email protected] Department of Genome Sciences and Department of Biology, University of Washington, Box 355065, Seattle, WA 98195-5065 USA -- MORPHMET may be accessed via its webpage at http://www.morphometrics.org --- You received this message because you are subscribed to the Google Groups "MORPHMET" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected].
