[R-sig-phylo] Simulating a phylogeny with outgroup on long branch

2011-10-13 Thread Scott Chamberlain
Hello, I want to simulate two types of phylogenies: one normally done with, for example, rcoal in ape; and the second type with an outgroup on a long branch. The first is easy with rcoal. I'm not sure how to make the second kind of tree. An example of this second kind is a tree with say all

Re: [R-sig-phylo] Simulating a phylogeny with outgroup on long branch

2011-10-13 Thread Liam J. Revell
Hi Scott. I'm not sure why you want to do this, but based on your description it sounds like you could just generate two separate trees and then paste them together across a deep basal split. The following is an example of doing this, although I'm sure you could also come up with your own

Re: [R-sig-phylo] Simulating a phylogeny with outgroup on long branch

2011-10-13 Thread Scott Chamberlain
Hi Liam, Great, thanks so much. The point of this exercise is to figure out to what extent certain tree characteristics are influencing phylogenetic meta-analysis output. We think that deep basal splits in these types of trees (e.g., mostly animals with a plant species as an outgroup) may be