[R-sig-Geo] Zero Inflated Poisson

[Edzer Pebesma]

*I'm not sure if you're aware of the following publication:

*

*2005*: Mapping sea bird densities over the North Sea: spatially
aggregated estimates and temporal changes
<http://www.citeulike.org/article/3505281>
Pebesma Edzer J. and Duin Richard N. M. and Burrough Peter A.
/Environmetrics/

*The analysis done there is mostly reproduced by:
*

*library(gstat)
demo(fulmar) # Fulmaris glacialis
*

*Another direction you might want to look at is package geoRglm.
*

*Best regads,
--
Edzer
*



Sven Adler wrote:
> Dear all,
> I want to model bird distribution at see. The data consists 10000
> samples but 90% are zeros. I try first a gamm (mgcv)with quasipoisson
> but it might bee problematic with so many zeros. I look for a (spatial)
> model that can use Zero Inflated Poisson distribution or similar. Is
> there any?
>
> Thank you
> sincerely yours
>
> Sven
>
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>   

-- 
Edzer Pebesma
Institute for Geoinformatics (ifgi), University of Münster
Weseler Straße 253, 48151 Münster, Germany. Phone: +49 251
8333081, Fax: +49 251 8339763 http://ifgi.uni-muenster.de/
http://www.springer.com/978-0-387-78170-9 e.pebesma at wwu.de