I know this is a repeat question ( http://www.mail-archive.com/r-sig-phylo@r-project.org/msg04424.html) but I didn't see any reponses/answers to the first posting, so I thought I'd ask again:
I have a pre-published tree for my species of interest that includes all the species in my dataset. However, my dataset contains duplicate data for a few species (different estimates from different authors). What is the best way to incorporate all the data into a PGLS analysis? When I try to run the analysis with gls() I get the error: "Error in Initialize.corPhyl(X[[i]], ...) : number of observations and number of tips in the tree are not equal." I imagine that I could: 1. toss out duplicates 2. average/combine duplicates 3. create very short branches for duplicate species and treat them as very closely-related but separate species (but I don't know how to actually do this.) 4. ??? Thanks, Philip Shirk [[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/