Hello,  I am a student working on fisheries data using a mixed linear
model. I have a question about the varIdent function. I have information on
140 fishers at nine sites, where the only random effect is for the site. As
I do not have equal variances between sites, is it correct to use the
varIdent argument for the sites? Do I lose any information by doing it this
way?


M1<-lme(resp~......,random = ~1|Site,weights = varIdent(form =~1|Site) ))

Thanks
David

-- 
David Gill
PhD Candidate
Centre for Resource Management and Environmental Studies (CERMES)
University of the West Indies
Cave Hill Campus
Barbados
oceancurrents@gmail.com

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