[R-sig-Geo] Using multicore processors with gstat

[Edzer Pebesma]

On 07/21/2010 05:27 AM, Pierre Roudier wrote:
> Dear geostatisticans,
> 
> I'm going to deal with pretty big datasets in one of my projects (1G
> pixels +), and I'd like to keep using gstat for the geostatistics.
> 
> Do someone know if the gstat package supports parralelisation of
> functions like cariogram() and fit.variogram() on multicore
> processors?

there is none provided by the package itself. there is some optimization
behind variogram() for gridded data, as opposed to irregular points. For
data sizes this large, I'd start thinking about how to work with samples
of the data, rather than the full data, for computing variograms.

I can't see why fit.variogram would make sense to parrallelize.

> Cheers,
> 
> Pierre
> 
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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