Re: [R] convergence problem gamm / lme

2009-01-29 Thread geert aarts
as some examples showing how to do >this. best, Simon On Thursday 29 January 2009 08:20, geert aarts wrote: > Simon, thanks for your reply and your suggestions. > > I fitted the following glmm's > > gamm3<-try(glmmPQL(count~offset(offsetter)+poly(lon,3)*poly(lat,3),r

Re: [R] convergence problem gamm / lme

2009-01-29 Thread geert aarts
converge, but it's usually not as obstinate as it seems > to be in this case, if the model structure is reasonable and identifiable. > > best, > Simon > > > > > > On Thursday 22 January 2009 15:52, geert aarts wrote: >> Hope one of you could help with the foll

[R] convergence problem gamm / lme

2009-01-22 Thread geert aarts
Hope one of you could help with the following question/problem: We would like to explain the spatial distribution of juvenile fish. We have 2135 records, from 75 vessels (code_tripnr) and 7 to 39 observations for each vessel, hence the random effect for code_tripnr. The offset (‘offsetter’) ac