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9 results for “from:Edwin Lebrija Trejos”

what about "zero-inflated" predictors
Edwin Lebrija Trejos · Dec 27, 2012 · r-sig-mixed-models

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Group level predictors in mixed models
Edwin Lebrija Trejos · May 24, 2012 · r-sig-mixed-models

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Group level predictors in mixed models
Edwin Lebrija Trejos · May 22, 2012 · r-sig-mixed-models

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I cannot get species scores to plot with site scores in MDS when I use a distance matrix as input. Problems with NA's?
Edwin Lebrija Trejos · Dec 1, 2011 · r-help

Dear Gavin, Thanks a lot for your reply. I am still not sure if your suggestion can help me or not because I have got different types of errors while trying it. I have tried my best to troubleshoot them...

[R-meta] Random and mixed effects models with the Metafor rma.mv function
Edwin Lebrija Trejos · Jan 30, 2022 · r-sig-meta-analysis

Dear Community, I am looking for expert opinions on meta-analytical models and their implementation in The ?Metafor? Package by Wolfgang Viechtbauer. I am checking a meta-analysis of experiments on plant species with significant implications for the reviewed topic...

[R-meta] Random and mixed effects models with the Metafor rma.mv function
Edwin Lebrija Trejos · Jan 31, 2022 · r-sig-meta-analysis

Dear Wolfgang, Thanks for your illustrating replies with links. Some follow up (I am copy-pasting the relevant bits of conversation): 1) ">- Moreover, agreeing that it's important to control for dependence among >outcomes, I wonder if additionally controlling for...

I cannot get species scores to plot with site scores in MDS when I use a distance matrix as input. Problems with NA's?
Edwin Lebrija Trejos · Nov 24, 2011 · r-help

Hi, First I should note I am relatively new to R so I would appreciate answers that take this into account. I am trying to perform an MDS ordination using the function ?metaMDS? of the ?vegan? package. I want to...

I cannot get species scores to plot with site scores in MDS when I use a distance matrix as input. Problems with NA's?
Edwin Lebrija Trejos · Nov 27, 2011 · r-help

Hi, I have used the daisy() function from the package "cluster" as suggested. Indeed it can handle Na's but this is not different from the gowdis() function in Package "FD". My problem is not calculating the similarity matrix for...

what about "zero-inflated" predictors (Ben Bolker)
Edwin Lebrija Trejos · Jan 24, 2013 · r-sig-mixed-models

Dear Ben, sorry for not replying and thanking you for your answer before. I was relocating. > > The reason that there's very little attention given to the > distribution of the predictors is that in general the definition > of standard statistical...

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