[R-sig-Geo] maxdist for kriging with an external drift

[Edzer Pebesma]

Yes, that is right.

Els Verfaillie wrote:
> Dear list,
>
>  
>
> I want to use Kriging with an external drift for a sedimentological dataset
> of grain-size that has a linear relation with the depth. 
>
> Am I correct that when I set a 'maxdist' using the krige command, that a
> trend for the primary variable (grain-size) is calculated as a local linear
> function of the secondary variable (depth)? Is this function thus different
> for each interpolation window? 
>
>  
>
> d50.ked.dir50 <- krige(D50F~depth, locations=ds50, newdata=Depth,
> model=d50.fit.var.50, nmin=2, nmax=16, maxdist=9000)
>
>  
>
> Thank you for your help.
>
>  
>
> Best regards,
>
> Els Verfaillie
>
>  
>
> ______________________________________________
>
> Dr. Els Verfaillie
>
> Carto-GIS cluster
>
> Ghent University (UGent) - Department of Geography
>
> ______________________________________________
>
>  
>
>  
>
>
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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