Re: [R] Poisson GLM warning message

2010-12-01 Thread Prof Brian Ripley
On Wed, 1 Dec 2010, Anna Berthinussen wrote: Hi, I receive the following warning message when I run a poisson GLM in R: "glm.fit: fitted rates numerically 0 occurred" The model summary is shown below. The variable 'Species' consists of counts of different species ranging from 0 to 4. I suspec

[R] Poisson GLM warning message

2010-12-01 Thread Anna Berthinussen
Hi, I receive the following warning message when I run a poisson GLM in R: "glm.fit: fitted rates numerically 0 occurred" The model summary is shown below. The variable 'Species' consists of counts of different species ranging from 0 to 4. I suspect this may have something to do with the warn