Thanks Joe!
On 24 December 2013 17:31, Joe Felsenstein <felse...@uw.edu> wrote:
> 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
>
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