[R-sig-Geo] geoR, Kriging, non-standard models

[Paulo Justiniano Ribeiro Jr]

Gildas

regarding with geoR you can only "fit" such models visually using
lines.variomodel() or alike.
The automatic fitting functions (variofit(), likfit())
do not fit "nested" models.




Paulo Justiniano Ribeiro Jr
LEG (Laboratorio de Estatistica e Geoinformacao)
Universidade Federal do Parana
Caixa Postal 19.081
CEP 81.531-990
Curitiba, PR  -  Brasil
Tel: (+55) 41 3361 3573
VOIP: (+55) (41) (3361 3600) 1053 1066
Fax: (+55) 41 3361 3141
e-mail: paulojus AT  ufpr  br
http://www.leg.ufpr.br/~paulojus

On Tue, 6 Dec 2011, Gildas Mazo wrote:

> Dear R users,
>
> I am learning geostatistics and was trying to analyse the 
> Wolfcamp-Aquifer data from Cressie's famous book (1994) using the geoR 
> package. However I don't know how to fit the semivariogram model found 
> by Cressie (4.1.2) page 217. It is a smooth combination of two power 
> models. How can I do that with geoR ? Or gstat ?
>
> Thanks,
> Gildas
>
> -- 
>
> Gildas Mazo
> Doctorant Equipe-Projet MISTIS
> INRIA Grenoble Rhone-Alpes
> Inovall?e, 655, av. de l'Europe, Montbonnot
> 38334 Saint-Ismier Cedex France
> Bureau: G-206
> Tel: +33 (0) 4 56527104
>
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