[R-sig-eco] (no subject)

[Edzer Pebesma]

On 01/28/2011 09:18 AM, Sven Adler (2) wrote:
>  "I never
> understood why people would test for spatial autocorrelation, as
> non-significant autocorrelation will only indicate that the sample size
> is small."
> 
>  Maby it is here the wrong place (r-sig-geo) but it is an important question for ecological research too.
> If I found no improvement when including spatial autocorrelation in the model, following the principle of simplicity,  should I remove it from the model?
> 
If the goal is (spatial) prediction, I would say yes. If the goal is
parameter estimation or model identification, I'm not so sure.
-- 
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.52north.org/geostatistics      e.pebesma at wwu.de