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glmmPQL crashes on inclusion of corSpatial object

Dear Patrick,

It seems like the correlation structure makes the model unstable. I get
convergence when setting fixed = TRUE, but the estimate are very unstable.

I'd suggest to have a look at the INLA package which allows to fit
spatially correlated random intercepts. It's described in "Spatial and
Spatio-Temporal Bayesian models with R-INLA" (Blangiardo & Cameletti, 2015)

Best regards,


ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature and
Forest
team Biometrie & Kwaliteitszorg / team Biometrics & Quality Assurance
Kliniekstraat 25
1070 Anderlecht
Belgium

To call in the statistician after the experiment is done may be no more
than asking him to perform a post-mortem examination: he may be able to say
what the experiment died of. ~ Sir Ronald Aylmer Fisher
The plural of anecdote is not data. ~ Roger Brinner
The combination of some data and an aching desire for an answer does not
ensure that a reasonable answer can be extracted from a given body of data.
~ John Tukey

2016-07-25 12:38 GMT+02:00 Patrick Johann Schratz <patrick.schratz at gmail.com