[R-sig-Geo] Variogram models in gstat

[Edzer Pebesma]

Most of them can be found on page 38 of http://www.gstat.org/gstat.pdf

The Mat / Ste models are e.g. described in M. Stein, "Interpolation of
Spatial Data: Some Theory for Kriging", Springer.

Let me know if there are further descriptions missing.
--
Edzer

Sidney Bernal wrote:
> 
>  
> Good Morning
> 
> Today I make a geostatistics course, so I'm using R 2.10.1 and I am writing to ask the please of the mathematical formulas of the 19 models of covariogram variogram programmed in the gstat package.
>  
>    short                                      long
> 1    Nug                              Nug (nugget)
> 2    Exp                         Exp (exponential)
> 3    Sph                           Sph (spherical)
> 4    Gau                            Gau (gaussian)
> 5    Exc               Exclass (Exponential class)
> 6    Mat                              Mat (Matern)
> 7    Ste Mat (Matern, M. Stein's parameterization)
> 8    Cir                            Cir (circular)
> 9    Lin                              Lin (linear)
> 10   Bes                              Bes (bessel)
> 11   Pen                      Pen (pentaspherical)
> 12   Per                            Per (periodic)
> 13   Hol                                Hol (hole)
> 14   Log                         Log (logarithmic)
> 15   Pow                               Pow (power)
> 16   Spl                              Spl (spline)
> 17   Leg                            Leg (Legendre)
> 18   Err                   Err (Measurement error)
> 19   Int                           Int (Intercept)
>  
> Awaiting your prompt response.
>  
> Sidney Bernal
> sidney86_115 at hotmail.com
> 
>  
>  
> Sidney Bernal
> 
>  		 	   		  
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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.52north.org/geostatistics      e.pebesma at wwu.de