[R] What error distribution should I use?

chuck.01 CharlieTheBrown77 at gmail.com
Wed Mar 28 00:07:43 CEST 2012

Could you please post a small example of your data and code which gives you
this error.  Your assumed error distribution sounds reasonable.  I am
interested as to why you have zeros... you have sites with species richness
==0 ??    

Lívia Dorneles Audino wrote
> I'm trying to make a glmm to identify the relationship between insect
> species richness with fragment size, isolation and time (different years).
> I already tried to analyse it using poisson distribution error, but I
> always face with the following warning:
> *glm.fit: fitted probabilities numerically 0 or 1 occurred *
> This is probably hapenning because my dataset has a lot of zeros. So, what
> error distribution should I use?
> -- 
> *Lívia *
> 	[[alternative HTML version deleted]]
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