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2011 Feb 14
1
MCMC glmm
...I'm working with abundance data of some species, but containing too zero values, and the factors are the ones typical in a BACI experiment (Before-and-After-Control-Impact). Thus, these are two fixed factors. As the data does not holds the normality and homogeneity of variances assumptions of clasiccal ANOVA, I'm trying to fit a zero-altered model using the MCMC glmm library. I've two questions: 1.- how I can include an interaction between the BA (before and after) and the CI (control-impact) components in this kind of models? I'm searching in the notes available in the models but...