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presence
2002 Sep 20
1
warning in binomial analysis
Hi,
I have make an analise with presence and absence, y=(1 e 0).
I have a area continuous data and a sp data with 25 levels. I have 300 points.
When I make
glm((presenca/peso)~area,weights=peso,family=binomial,maxit=1000)
where
presenca is 0 or 1.
peso is the unit = 1.
area is the continuous data.
The analysis is OK.
When I put the sp and interactions in analysis this warning appear.
glm((presenca/peso)~area*sp,weights=peso,family=binomial,maxit=1000)
War...