[R-sig-phylo] How to test if the slope is different from 1 in PGLS?

ot;) Besides calculating the slope of the regression I am also interested to test if the slope is different then 1. How can I do this in PGLS? I would be very glad if any one could help me with that. Kind regards, Gustavo Paterno - Gustavo B. Paterno Doutorand

Re: [R-sig-phylo] Phylogenetic regression available in R (Grafen, 1989)

in the denominator. The other possibility is that once the contrasts have been taken across each higher node, the design matrix for the model has lower rank than it did before, which is called losing a degree of freedom in the numerator (it is transferred to the denominator)" Best wishes, Gus

Re: [R-sig-phylo] Phylogenetic regression available in R (Grafen, 1989)

be wrong, but was'nt that method already implemented in the CAPER > package by David Orme (function pgls, brunch, crunch)? > If yes, then which new functionalities does phyreg bring? > Regards, > Xavier > > > 2014-03-05 13:46 GMT+01:00 Gustavo Paterno : > Hello all

[R-sig-phylo] Phylogenetic regression available in R (Grafen, 1989)

Hello all, I just got the confirmation that the Grafen method for phylogenetic regression (Grafen, 1989) was implemented in R ! The package “phyreg” has lots of details in help. Best wishes for all. Gustavo Paterno ___ R-sig-phylo mailing list - R-sig

Re: [R-sig-phylo] Phylogenetic Regression in R (Grafen method)

n the way I understand, pgls does not give you contrasts, is that right? Thanks again, Gustavo Paterno I`m using Pyron phlogeny, so i dono have any politomy in my data estrutur On Dec 3, 2013, at 1:20 PM, Gustavo Paterno wrote: > Hello, > > I`m analysing data for 300 anuran specie

[R-sig-phylo] Phylogenetic Regression in R (Grafen method)

Hello, I`m analysing data for 300 anuran species. I want to run an ANCOVA using phylogenetic regression method (Grafen, 1989). Does any one know about a function or script to do it? Thanks, Gustavo Paterno ___ R-sig-phylo mailing list - R-sig-phylo@r