[R-sig-Geo] Best approach to implement Spatial Interpolations

[ONKELINX, Thierry]

Dear Cesar,

Krige, idw of predict.gstat all return objects with the prediction. You only get maps when you plot these objects. So you only need to find out how to return these objects with JRI to your GIS.

Edzer Pebesma will be best positioned to answer your question about gstat's capability on working with non-projected data.

Cheers,

Thierry

----------------------------------------------------------------------------
ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek / Research Institute for Nature and Forest
Cel biometrie, methodologie en kwaliteitszorg / Section biometrics, methodology and quality assurance
Gaverstraat 4
9500 Geraardsbergen
Belgium
tel. + 32 54/436 185
Thierry.Onkelinx at inbo.be
www.inbo.be 

Do not put your faith in what statistics say until you have carefully considered what they do not say.  ~William W. Watt
A statistical analysis, properly conducted, is a delicate dissection of uncertainties, a surgery of suppositions. ~M.J.Moroney

 

> -----Oorspronkelijk bericht-----
> Van: r-sig-geo-bounces at stat.math.ethz.ch 
> [mailto:r-sig-geo-bounces at stat.math.ethz.ch] Namens Cesar 
> Martinez Izquierdo
> Verzonden: woensdag 27 juni 2007 12:55
> Aan: r-sig-geo at stat.math.ethz.ch
> Onderwerp: [R-sig-Geo] Best approach to implement Spatial 
> Interpolations
> 
> Hello list,
> we are trying to implement spatial interpolations (IDW and 
> several types of  Kriging) in our open source GIS 
> application, which is written in Java.
> 
> We plan to use JRI to connect with R from Java, and then use 
> the features of "gstat" R-package to calculate the interpolations.
> 
> However, we don't want R to draw the results of 
> interpolations, we just want to get the raw result which we 
> will draw in our GIS client.
> 
> Now, the questions:
> - Do you think gstat is the best R package for this task?
> I've read that it doesn't allow not-projected data. Is there 
> a package which provides similar algorithms and works with 
> not-projected data?
> 
> - Do you have some documentation regarding this topics (more exactly: 
> documentation about how to get the results of a kriging, etc 
> with JRI)?
> 
> Any comments and suggestions are welcome.
> 
> Regards,
> 
> --
> César Martínez Izquierdo
> gvSIG development team
> http://www.gvsig.gva.es
> 
> IVER T.I.
> C/ Salamanca 50
> 46005 Valencia - Spain
> http://www.iver.es
> 
> _______________________________________________
> R-sig-Geo mailing list
> R-sig-Geo at stat.math.ethz.ch
> https://stat.ethz.ch/mailman/listinfo/r-sig-geo
>