[R-sig-Geo] periodic variograms

[Paulo Justiniano Ribeiro Jr]

You could try with the wave model:
> require(geoR)
> plot(c(0,100), c(0,1.5), type="n")
> lines.variomodel(1:100,"wave", cov.pars=c(1, 5), nug=0.2)

which is algo implemented by other packages




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
Fax: (+55) 41 3361 3141
e-mail: paulojus AT  ufpr  br
http://www.leg.ufpr.br/~paulojus



On Thu, 11 Dec 2008, Satterthwaite, Paul wrote:

> Hello,
>
>
>
> I am a beginner with R, and have 2 questions concerning
> spatial/geostatistics. I doing a little exercise investigating
> periodicity in artificial patch landscapes and resulting periodicity of
> semivariograms.
>
>
>
> Does anyone know if there is an already-existing model semivariogram
> that contains a "hole effect" that can dampen with increasing lag, i.e.,
> includes some periodicity in the model semivariogram fit to the
> empirical data?
>
>
>
> Any ideas would be GREATLY appreciated!
>
> Cheers!
>
>
>
> Sincerely,
>
>
>
> Paul M. Satterthwaite
>
>
>
>
>
> Paul M. Satterthwaite
>
> MS Student, Forest Science
>
> Richardson 201A
>
> Oregon State University
>
> Corvallis, OR 97331
>
> paul.satterthwaite at oregonstate.edu
> <mailto:paul.satterthwaite at oregonstate.edu>
>
>
>
>
> 	[[alternative HTML version deleted]]
>
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