Hi Gents and Lads,
I have a very rapid question with a perhaps not-so-obvious reply. I'm in the
process of testing a number of evolutionary models and estimating phylogenetic
signal on a certain univariate data set. So something very basic and very
simple. The point is, I found BM performs
Hi all,
I would enquire the list about a simple issue. Is there any method implemented
to test for changes in diversification rate as applied to fossil (non-
ultrametric) trees?. As far as I understand, the methods so far available work
on ultrametric trees (I've inspected laser's
Hi Morgan,
this is just stuff for thought, and remember, this is wrong anyway. But you
may try something like this:
1. compute pics,
2. take the pic value at the ancestral node subtending to your unknown tip,
3. pretend one of the two tips the pic was originally computed on is in fact
your
, pasquale.r...@libero.it pasquale.r...@libero.it
wrote:
Hi Morgan,
this is just stuff for thought, and remember, this is wrong anyway. But you
may try something like this:
1. compute pics,
2. take the pic value at the ancestral node subtending to your unknown tip,
3. pretend one of the two tips
Hi All,
I'm happy I have stimulated some discussion about this subject matter. For
some reason I can't imagine it looks this whole thing is going to be somehow
personal and I have not posted this last e-mail to the list as a consequence.
Joe, unfotunately I never attended a lecture of yours,
Hi all,
I tried the function written by Liam, it works pretty well! As an indication
for users, do not use an ultrametric tree, you'd get an error like this:
Error in chol.default(x, pivot = FALSE) :
the leading minor of order 140 is not positive definite
Error in pd.solve(varcov) : x
or as terminal taxa) and how we time-scale our trees.
-Dave
On Thu, Feb 17, 2011 at 6:19 AM, pasquale.r...@libero.it
pasquale.r...@libero.it wrote:
Hi all,
I have a simple question. Is it possible, or even feasible, to run ancestral
state estimation under Brownian Motion with a trend
