Eduardo Ascarrunz <ear...@gmail.com> wrote: > Also, I figured out I could work with unrooted trees. I suspect the procedure > would be similar to your rooted method, wouldn't it?
There is a 1-1 correspondence between n-species rooted tree topologies and (n+1)-species unrooted tree topologies (this is discussed in Chapter 3 of my book). So you can simply generate a bifurcating rooted tree, or a multifurcating rooted tree, of n-1 tips, and then unroot it, making the previous root now be species n. Then you get a randomly sampled unrooted tree. This works for tree topologies but not, I think, for labeled histories. Joe ---- Joe Felsenstein j...@gs.washington.edu Department of Genome Sciences and Department of Biology, University of Washington, Box 355065, Seattle, WA 98195-5065 USA _______________________________________________ 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/
