Re: [R-sig-phylo] estimate ancestral state with OUwie models

2018-06-11 Thread Simone Blomberg
This sounded wrong to me, as the OU process should be agnostic to the dataset: There are no restrictions inherent in the OU process that apply particularly to phylogenetic data, whether the tree is ultrametric or not. I re-read Slater 2014 and it is clear that you can use branch length

Re: [R-sig-phylo] estimate ancestral state with OUwie models

2018-06-11 Thread Brian O'Meara
Prompted by Bruno's email, and similar requests by some students at the Arnold & Felsenstein Evolutionary Quantitative Genetics course, we've started adding ancestral state reconstruction to OUwie. It still needs debugging and testing, but should be ready fairly soon. I do believe bayou does

Re: [R-sig-phylo] estimate ancestral state with OUwie models

2018-06-11 Thread David Bapst
Just to follow off what Lucas said, but please note you cannot rescale branches of a phylogeny using an OU model when the tree is non-ultrametric (such as when it contains extinct, fossil taxa as tips). Slater (2014, MEE) discusses this more in a brief correction to Slater (2013). I don't know if

Re: [R-sig-phylo] Testing tree disagreement: SH-test disappeared in ape-package

2018-06-11 Thread Sebastian Y . Müller
Dear Klaus, Thanks for pointing this out, that's exactly what I was looking for! I have a question concerning the bootstrapping method and wheater it makes sense to add the block bootstrap to better model adjacent that are autocorrelated (presumably breaking the iid assumption). But since it's