Re: [R-sig-phylo] Testing for relationship between one categorical and one continuous variable in a phylogenetic framework.

Thanks everyone, exactly what I needed! Went ahead and used threshBayes since I only have two characters, and indeed 95% HPD of r was > 0 (ESS > 1,000). Thanks so much for all the advice! Sean On Sat, Apr 9, 2016 at 11:23 AM, Joe Felsenstein wrote: > Liam -- > > Thanks,

Re: [R-sig-phylo] Testing for relationship between one categorical and one continuous variable in a phylogenetic framework.

Just to clarify Joe's email - Threshml can be called using my package with Scott Chamberlain called Rphylip (not phytools). It is on CRAN; however, Rphylip is just a 'wrapper' for PHYLIP, which still needs to be installed locally. In the future we may change Rphylip so that it is packaged with

Re: [R-sig-phylo] Testing for relationship between one categorical and one continuous variable in a phylogenetic framework.

Sean -- ... or, if you want to do it *really correctly*, you can use the threshold model of Sewall Wright for the discrete character and use the MCMC approach that I proposed in 2012: Felsenstein, J. 2012. A comparative method for both discrete and continuous characters using the threshold

Re: [R-sig-phylo] Testing for relationship between one categorical and one continuous variable in a phylogenetic framework.

Alejandro is correct. You can also do it with phylogenetically independent contrasts or computer simulations: Garland Jr., T., P. H. Harvey, and A. R. Ives. 1992. Procedures for the analysis of comparative data using phylogenetically independent contrasts. Systematic Biology 41:18–32.

Re: [R-sig-phylo] Testing for relationship between one categorical and one continuous variable in a phylogenetic framework.

Hello Sean, If the continuous variable is the “response” and the “independent” variable the discrete one, you can use PGLS, this would be akin to an ANOVA and you can do it accounting for phylogenetic non-independence. Is this what you were after? Cheers Alejandro

[R-sig-phylo] Testing for relationship between one categorical and one continuous variable in a phylogenetic framework.

Hello, I have a two traits, one categorical (binary) and one continuous, and I want to test for a relationship between them accounting for phylogenetic signal. I have found a plethora of sources for examining relationships between multiple categorical traits and many others for examining multiple