[R-sig-Geo] Error autoKrige

[Edzer Pebesma]

Could you please verify (with zerodist) whether you have duplicate
observations in your data set (i.e., multiple observations sharing a
common spatial location)?

On 08/10/2010 03:06 PM, kad wrote:
> 
> Dear all,
> I want to do 10 kriging maps with packages automap.So ,I use
> autofitvariogram for fitting the experimental variogram then I use the
> command autokrige.
> I have this error:
> 
> In getModel(initial_sill - initial_nugget, m, initial_range,  ... :
>   An error has occured during variogram fitting. Used:
>         nugget: 0
>         model:  Ste
>         psill:  1.13727235894792
>         range:  6.5336666581637
>         kappa:  10
>   as initial guess. This particular variogram fit is not taken into account. 
> Gstat error:
> Error in fit.variogram(experimental_variogram, model = vgm(psill = psill,  : 
>   fit.method 7 will not work with zero distance semivariances; use another
> fit.method value
> 
> I change the option fit.method =7 by differents number betwen 1 and 6 but I
> have always this error.
> Do you can help me 
> 
> KAD
> 
>  
> 
>   

-- 
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