I know this is a repeat question (
http://www.mail-archive.com/r-sig-phylo@r-project.org/msg04424.html) but I
didn't see any reponses/answers to the first posting, so I thought I'd ask
again:
I have a pre-published tree for my species of interest that includes all
the species in my dataset.
Hi Philip.
Do not create very short tips. This will actually lead to very high
weight being given to any difference between these two observations!
Take the average of the different observations. Using the methods of
Felsenstein (2008) or Ives & Garland (2007) it is also possible to take
Thanks for the input. I'll look into those publications and the Rphylopars
package.
Actually, all of my data already has uncertainty. I've been getting mean
values from published studies and then weighting these by the inverse
variance (as is common in meta-analyses). So I have both uncertainty
