Re: [R-sig-phylo] How to incorporate duplicate species data

2017-01-29 Thread Christopher Hamilton
If you have multiple measurements per species (multiple individuals of a species, to represent a single tip), there is a program Rphylopars that is now available, that accounts for within-species variation. Though maybe it’s not appropriate for your data, as Liam was saying. I like it, but I

Re: [R-sig-phylo] How to incorporate duplicate species data

2017-01-27 Thread Philip Shirk
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

Re: [R-sig-phylo] How to incorporate duplicate species data

2017-01-27 Thread Liam J. Revell
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