Choosing nlme or lme4?

Hi List,

I? m analysing the selectivity of
resting site use by forest carnivores through mixed modelling techniques and I
wonder which will be the best r package to deal with several aspects simultaneously:
-          binomial
variable response;
-          possible
spatial and/or temporal correlation;
I have tried nlme (lme function) and
lme4 (lmer function) packages, however I realize that the results were different
concerning regression coefficients estimates and p-values!

In nlme package, despite I can add
easily a variance structure and/or temporal and spatial correlations structures,
the choice of the ?family = binomial? is not allowed. On the other hand, with lme4
I can choose the binomial familty, but no structures can be added!


Am I wrong with these statements?
Zuur et al. 2009 always used lme4 (Mass or glmmML) with binomial data but never
nlme!
Can anyone help me? There is other options
in R ?


Thanks a lot!
Best regards!

Filipe Carvalho

Filipe Carvalho, MSc, PhD student.
Unidade de Biologia da Conserva??o (UBC) e
Centro de Investiga??o em Biodiversidade e
Recursos Gen?ticos (CIBIO),
Universidade de ?vora,
Casa Cordovil, 2? Andar, Rua Dr.
Joaquim Henrique da Fonseca,
7000-890 ?vora, (PORTUGAL)
Telefone: + 351266759350


Filipe Carvalho, MSc, PhD student.
Conservation Biology Unit (UBC) and
Research Center in Biodiversity and
Genetic Resources (CIBIO),
University of ?vora,
Casa Cordovil, 2? Andar, Rua Dr.
Joaquim Henrique da Fonseca,
7000-890 ?vora, (PORTUGAL)
Phone: + 351266759350

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