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Hi Claudio, for multivariate data see the mvabund package as well as the boral package. Regards, Ludovico Ottieni Outlook per Android<https://aka.ms/ghei36> Da: Claudio Inviato: sabato 28 gennaio, 16:45 Oggetto: [R-sig-ME] multivariate mixed nested...

"Let me paraphrase what you wrote to see if I understand. You have a number of plots each populated with a variety of plant species" OK, "and you are interested in only two of those species." No, I'm interested...

Thanks for your reply!I successfully fitted another model with the same number of observation (and structure) and the only difference is that cover values were more centered on the mean values. I just tried to fit the same model...

Dear all,I'am trying to fit a very simple linear model. I am analyzing the differences in the number of species (DS) found in several permanent plots in two year of observations. Firstly, I have calculated the differences per...

Dear List, I would like to analyse the differences in life form (Raunki?r) composition between two populations. The two populations (plant communities) were sampled randomly and the presence of plant species were recorded. So for each plot I have...

Dear list,I am fitting a fourth corner model using the mvabund package. I would like to obtain the percentage of deviance explained by my model. However the function traitglm of the mvabund package does not give any measure of...

Hi Claudio, both packages can deal with different family, i.e. poisson and negative binomial for counts, beta for proportion, normal... Ragards, Ludovico Dott. For. Ludovico Frate, Ph.D. Environmetrics Lab, Dipartimento di Bioscienze e Territorio - Universit? degli Studi del...

Thank you Tim for your suggestion! I'll try with mixed model! Ludovico Frate PhD student (University of Molise - Italy) Environmetrics Lab http://www.distat.unimol.it/STAT/environmetrica/organico/collaboratori/ludovico-frate-1 Department of Biosciences and Territory - DiBT...

Dear List, I'am trying to fit a GLM with a binomial error distribution but I am a little bit confused about the model. I have 24 vegetation permanent plots, randomly distributed, sampled two times: 1962 and 2009. I am...

Hi, simper Analysis is not always appropriate since much of the differences arise from within site variability rather than between site variability! Have a look to the package mvabund by Warton! Regards, Ludovico Inviata dal mio Windows Phone ________________________________ Da: JC...

Dear list,I have got the following error message trying to fit this model: glmmadmb<-(cover~time+summit+direction+(1|plot_id), family = "beta", data = cover_lf) Error in glmmadmb(cover~time+summit+direction+(1|plot_id), : The function maximizer...