Dear Anne,
Thanks for the enquiry. I think we should have done this long before. I
havent done any geostatistics with GRASS but I did alot in ArcGIS and also
in R (variography). I have to tell you that ArcGIS is for those who want to
have a surface only by just clicking on "finish" button trought its
powerfull interface. That is, it does not provide a good scientific
backgroud for you to check the procedure. for example how it fitted the
variogram model or how exactly it does the "validation". That is why the
"Geostatistical package" objects or classes are not available for the
programmers to program with (there is a kriging in "Spatial analyst" package
though that its object is programmable and I personally did some with it.
but it lacks the variogram modeling). I think they are still working on it.
In short I dont recommend ArcGIS for the so called scientific kriging. In
the other hand R is very powerfull in that it gives you freedom to do your
own style through coding. I worked with "GeoR" pakcage and it is pretty nice
both in terms of variography and kriging. There are other package like
"Gstat" that I havent worked with but have good qualities. GeoR implements
the so called "model based geostatistics" which is the application of
bayesian statististics to the geostistics I guess and it is quite new.

I hope these comments were helpful and please let me know if you need any
further explanation from me,

Ebrahim




On Fri, May 22, 2009 at 6:00 PM, <r-sig-geo-request@stat.math.ethz.ch>wrote:

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>   1. [SoC] GRASS module for kriging - call for users (Anne Ghisla)
>   2. Re: Comparing spatial distributions - permutation test
>      implementation (JiHO)
>   3. Interpolation of data (Andrew Aldersley)
>   4. Finding the county shapefile polygon closest to a long-lat
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>   5. Re: Finding the county shapefile polygon closest to       along-lat
>      position (Pilar Tugores Ferra)
>   6. Re: Finding the county shapefile polygon closest to a
>      long-lat position (Paul Hiemstra)
>   7. convert owin object to SpatialPolygons object (Adrian Baddeley)
>   8. Re: Finding the county shapefile polygon closest to along-lat
>      position (Roger Bivand)
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>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Thu, 21 May 2009 12:14:31 +0200
> From: Anne Ghisla <a.ghisla@studenti.uninsubria.it>
> Subject: [R-sig-Geo] [SoC] GRASS module for kriging - call for users
> To: r-sig-geo <r-sig-geo@stat.math.ethz.ch>,
>        r-sig-ecology@r-project.org
> Message-ID: <1242900871.4154.5.camel@galadriel.uagra.net>
> Content-Type: text/plain; charset="us-ascii"
>
> Hello list, and sorry for cross-posting,
>
> my Google Summer of Code project aims to provide a wxPython interface to
> v.autokrige and to add functionality [0].
> I would ask to people who perform kriging analyses (with GRASS, R or
> ArcGIS)
> what are the most common use cases, what they like and dislike in the
> interfaces and functionalities provided by the software they use.
>
> After some feedback about this, I will prepare the interface and load it on
> GRASS addons SVN repository [1] for comments.
>
> many thanks in advance,
>
> Anne Ghisla
>
> [0]
>
> http://socghop.appspot.com/student_project/show/google/gsoc2009/osgeo/t124023165994
> [1] https://svn.osgeo.org/grass/grass-addons/vector/
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