On 01/26/2011 02:45 PM, piero campa wrote: > > This is more about kriging theory actually, > but I can't understand in which different ways the elevation information is > taken into account in the prediction process when e.g.: > > - I apply ordinary cokriging on input data which include 3D (x,y,h) spatial > coordinates;
If your temperature is (near) surface temperature, then no, because you want to predict surface temperature, not temperature for arbitrary h values. > - I apply universal cokriging on input data with 2D (x,y) spatial > coordinates and using the elevation h as external drift on the output grid. This sounds more reasonable, yes. -- 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
