Navin, I believe constrained kriging may do this; I'm Cc:ing its authors, who may not be on the list.
http://cran.r-project.org/web/packages/constrainedKriging/ On 12/04/2012 03:33 PM, Swagath wrote: > Dear all, > > I'm a relatively new with kriging methods using gstat. I am interested > in performing an ordinary kriging to interpolate heavy metal > concentrations across Europe with 1000 data points. However, I > realized that when i performed cross-validation, OK tends to > under-estimate my higher values and over-estimate some lower values. Is > there anything i can do to correct for this smoothening effect by OK. I > was doing a web search and came across a paper 'Compensating for > Estimation Smoothing in Kriging' by Ricardo A. Olea and Vera Pawlowsky > where they discuss about this smoothening effect. Can anybody tell me > how to compensate for this smoothening effect by OK and show the > hot-spots on map. > > Thanks a lot for your time and help. > > Thanks, > Navin > > _______________________________________________ > R-sig-Geo mailing list > R-sig-Geo@r-project.org > https://stat.ethz.ch/mailman/listinfo/r-sig-geo -- 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.pebe...@wwu.de _______________________________________________ R-sig-Geo mailing list R-sig-Geo@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-geo