[R-sig-eco] Cluster Analysis

I would like to perform a cluster analysis to data of presence absence. Which distance and group linkage methods are best? Sincerely, Fco. Cabrera [[alternative HTML version deleted]] ___ R-sig-ecology mailing list R-sig-ecology@r-project.org

Re: [R-sig-eco] Cluster Analysis

On 19/05/11 20:20 PM, Francisco Cabrera Rodriguez fffccc...@yahoo.com wrote: I would like to perform a cluster analysis to data of presence absence. Which distance and group linkage methods are best? Francisco, Nobody knows. Honestly. Some people may have opinions. Even strong opinions.

Re: [R-sig-eco] quasi-complete seperation in logistic regression

-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 05/19/2011 02:41 PM, Stolen, D Eric (KSC-IHA-4400)[Innovative Health Applications LLC] wrote: Hello; I am working on a logistic regression model in which I have quasi-complete separation on an explanatory variable (see table below). The

Re: [R-sig-eco] Continuous distribution for zero or positive values (inGLM or GLMM)

Ben and Ruben, thank you very much for the suggestions. I started the “homework” and I had the impression that I can forget to find a GLMM implementation with Tweedie distribution (in a preliminar GLM, this distribution produced a very decent fit...). However the two-part analysis looks a good