I can think of a kludge approach for a single trait. Use Felsenstein's phylogenetically independent contrasts. Work down from the tips, calculating the internal nodes as specified by the algebra of the method. Stop when you get to a set of nodes of interest. Use the methods in Blomberg et al. (2003) on those calculated nodal values. Cheers, Ted
Theodore Garland, Jr., Distinguished Professor Department of Evolution, Ecology, and Organismal Biology (EEOB) University of California, Riverside Riverside, CA 92521 Office Phone: (951) 827-3524 Facsimile: (951) 827-4286 (not confidential) Email: tgarl...@ucr.edu http://www.biology.ucr.edu/people/faculty/Garland.html http://scholar.google.com/citations?hl=en&user=iSSbrhwAAAAJ Director, UCR Institute for the Development of <http://idea.ucr.edu/>Educational Applications <http://idea.ucr.edu/> Editor in Chief, *Physiological and Biochemical Zoology <http://www.press.uchicago.edu/ucp/journals/journal/pbz.html>* Fail Lab: Episode One *https://www.youtube.com/watch?v=c0msBWyTzU0 <https://www.youtube.com/watch?v=c0msBWyTzU0>* On Tue, Jan 26, 2021 at 9:43 AM Matthew Helmus <mrhel...@gmail.com> wrote: > Hello, > > Is there a method that can test for phylogenetic signal in data associated > with the internal nodes of a tree rather than data associated with tree > tips? > > Thank you! > Matt > > ------------------------------------------ > Matthew R. Helmus, Ph.D. > Integrative Ecology Lab <http://www.iecolab.org/> > Center for Biodiversity <http://www.biodiversitycenter.org/> > Department of Biology > Temple University > Philadelphia, PA 19122 > > facebook <https://www.facebook.com/IntegrativeEcology/> twitter > <https://twitter.com/mrhelmus> instagram > <https://www.instagram.com/integrative.ecology/> > Phone: 215 204-5989 <2152045989> > Email: mrhel...@temple.edu > Office: 538 SERC, Main Campus > < > https://www.google.com/maps/place/Temple+University+Science+Education+and+Research+Center/@39.9816749,-75.1532405,18.25z/data=%214m5%211m2%212m1%211sserc+temple%213m1%211s0x0000000000000000:0x83e756437aed7a9c > > > > ------------------------------------------ > > [[alternative HTML version deleted]] > > _______________________________________________ > R-sig-phylo mailing list - R-sig-phylo@r-project.org > https://stat.ethz.ch/mailman/listinfo/r-sig-phylo > Searchable archive at > http://www.mail-archive.com/r-sig-phylo@r-project.org/ > [[alternative HTML version deleted]] _______________________________________________ R-sig-phylo mailing list - R-sig-phylo@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-phylo Searchable archive at http://www.mail-archive.com/r-sig-phylo@r-project.org/
