[R-sig-Geo] kriging question

[Pilar Tugores Ferra]

Hi Dave and everybody,
I also work with acoustic data collected in parallel equidistant transects(in my case fish density)and we also have zero inflated data. 
"Playing" with Arcgis I saw that performing a cell declustering previous to an ordinary kriging improved substantially the predictions.
I supposed it occurs because in some sense the data is clustered in one axis of the 2D.
Don't you thing it's better this option than transforming the data?
I would appreciate your opinions.
Pilar


Mª Pilar Tugores Ferrà

Becaria FPI - PhD Student

Acústica de Pesquerías

I.E.O. - Centro Oceanográfico de Baleares 

Muelle de Poniente s/n

07015 Palma de Mallorca (España)

Tel.: (34) 971 401561


-----Mensaje original-----
De: r-sig-geo-bounces at stat.math.ethz.ch [mailto:r-sig-geo-bounces at stat.math.ethz.ch] En nombre de Ashton Shortridge
Enviado el: 27 August 2008 22:22
Para: r-sig-geo at stat.math.ethz.ch
Asunto: Re: [R-sig-Geo] kriging question

Hi Sarah,

This looks interesting and relevant:
http://www.leg.ufpr.br/mbgbook/

On Tuesday 26 August 2008, Edzer Pebesma wrote:
> Diggle & Ribeiro



-- 
Ashton Shortridge
Associate Professor			ashton at msu.edu
Dept of Geography			http://www.msu.edu/~ashton
235 Geography Building		ph (517) 432-3561
Michigan State University		fx (517) 432-1671

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