Hi Thierry, I think spatstat covers point pattern analysis, which is mostly not covered by gslib. I have seen either no or small differences between gstat and gslib, but never differences that I could not explain. They may for instance relate to how you integrate covariances over a block; there's many ways you can do this, all approximate. Other issues are neighbourhood selections that may be non-unique (e.g. take the nearest 20 neighbours).
I don't know of anyone who did a systematic comparison; you may want to ask on ai-geostats. I also don't know how to address the gslib community, if there is one. Has the open source version ever been updated since the printing of the 2nd edition of the book? Who to address with bugs or issues? -- Edzer ONKELINX, Thierry wrote: > Dear useRs, > > > > Currently I'm taking a course on spatial statistics. We use GSLIB in the > exercises. Maybe I could convince the professor to let the R aficionados > do their homework with R. So I was wondering if someone had already > compared the algorithms used in R packages like spatstat and gstat > versus the algorithms of GSLIB. If both R and GSLIB use similar > algorithm and hence yield the same results, then we probably can switch > to R. > > > > Best regards, > > > > Thierry > > > > ------------------------------------------------------------------------ > ---- > > ir. Thierry Onkelinx > > Instituut voor natuur- en bosonderzoek / Reseach 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 > > [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> > > www.inbo.be <http://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 > > > > > [[alternative HTML version deleted]] > > _______________________________________________ > R-sig-Geo mailing list > R-sig-Geo@stat.math.ethz.ch > https://stat.ethz.ch/mailman/listinfo/r-sig-geo > _______________________________________________ R-sig-Geo mailing list R-sig-Geo@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-geo