[R] Handling realisations in geoRglm
Chris Barker
cmbarker at ucdavis.edu
Wed Aug 30 02:27:22 CEST 2006
Dear R users:
I want to model mosquito count data based on landcover attributes and
meteorological variables using a Poisson GLSM in the geoRglm package. I
have monthly mosquito counts over more than 20 years with repeated
observations from individual trap sites over time. I have used
as.geodata() to successfully read my dataset into the geodata format
utilized by geoR and geoRglm, including specification of the
realisations. (I know the realisations have been specified correctly
because I can get data summaries by realisation from the geodata
object.) However, after reading the packages' documentation and
searching the mailing lists and other sources, it seems that the
functions in geoRglm do not acknowledge the existence of multiple
realisations per site. I see that the likfit() function in geoR has an
argument for realisations, but I cannot find anything similar in
geoRglm. Is it possible to model data with repeated realisations from
the same sites using geoRglm? If so, how can this be done and is there
a way to model dependence among the realisations over time?
Thank you,
Chris Barker
Ph.D. Candidate
University of California, Davis
cmbarker at ucdavis.edu
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