Looks like the sgeostat package (on CRAN) might do what you want ...
On Fri, 20 Oct 2000, [iso-8859-1] José Ernesto Jardim wrote:
> Hi
>
> I'm interested in doing a anisotropy analysis of some spatial data and
I
> want to do a contour plot of a covariance or variogram surface to
> visualize the directions of maximal and minimal anisotropy.
>
> I know how to do a contour plot :-) but how can I obtain the variogram
> surface having a geoeas format dataset (X, Y, Z) ?
>
> Thanks
>
> EJ
>
>
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