Does anyone know a maximum-likelihood implementation that uses molecular
sequences to optimizes node ages instead of branch lengths (ala Felsenstein
2008, p. 266)?
It sounds like nice idea for using in time calibrations.
Cheers,
Santiago
Santiago Claramunt
Associate Curator
Department
Hi Rafael,
Your method would underestimate the error associated with values derived from
single specimens because those values would have the highest errors, not
average errors.
What I have done in such cases is to estimate an average standard deviation
across species and use that average
Hi Julien,
Mosimann’s method was proposed for the study of allometry, so it would be
strange if it only applies to isometric cases. Can you provide further details
or suggest readings?
Cheers,
Santiago
On Jun 18, 2015, at 7:06 PM, Julien Clavel julien.cla...@hotmail.fr wrote:
Hi Sergio,
Hi Sergio,
If what you want to do is to partition your morphometric data into size and
shape components, then you can use Mosimann’s methods which do not require
regressions or phylogenetic corrections.
Mosimann, J. E. 1970. Size allometry: size and shape variables with charac-
terization of
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Santiago Claramunt, Ph.D.
Research Associate
Department of Ornithology
American Museum of Natural History
Does anyone know of an imlplementation of the RelTime algorithm (
1. Tamura K,
2. Battistuzzi FU,
3. Billing-Ross P,
4. Murillo O,
5. Filipski A,
6. Kumar S
. Estimating divergence times in large molecular phylogenies. Proc Natl
Acad Sci U S A.2012;109:19333-19338.) in R?
() and rcoal() are fine.
Any insights on this?
Cheers,
Santiago
Santiago Claramunt
Museum of Natural Science,
119 Foster Hall,
Louisiana State University,
Baton Rouge, LA70803
scla...@tigers.lsu.edu
http://www.museum.lsu.edu/Claramunt/Home.html
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R-sig
this is happening.
The oder issue is that the Log-likelihoods I obtained are smaller than
for simple yule model fitted using yule(). Is ape reporting -LogLiks?
Thanks in advance,
Santiago
Santiago Claramunt
Museum of Natural Science,
119 Foster Hall,
Louisiana State University,
Baton Rouge
()? Is it the covariance matrix divided
by the total time?
I'll appreciate any help with this.
Santiago
Santiago Claramunt
Museum of Natural Science,
119 Foster Hall,
Louisiana State University,
Baton Rouge, LA70803
scla...@lsu.edu
http://www.museum.lsu.edu/Claramunt/Home.html