Ken, The indicator kriging idea does not stop at a single binary variable. The "standard" (or "Stanford"?) way of getting non-negative predictions, and possibly predictions that sum to one is rather pragmatic--simply postprocessing predictions. There is a cleaner solution, called compositional kriging, which adds the "predictions should be non-negative and sum to one" constraint to the kriging system, but I don't know if implemenations are available in R. For compositional data analysis you may want to explore the R package compositions. I believe it does not do compositional kriging, but perhaps its author has suggestions; I Cc:'d this email to the author.
Best regards, -- Edzer Pierce, Ken wrote: > > Is there a method for kriging a response with multiple states, for > instance vegetation class in 10 classes? I know indicator kriging would > work for a boolean variable. Is there an extension for multiple > responses? > > Kenneth B. Pierce Jr. > Research Ecologist > Landscape Ecology, Modeling, Mapping and Analysis Team > PNW Research Station - USDA-FS > 3200 SW Jefferson Way, Corvallis, OR 97331 > [EMAIL PROTECTED] > 541 750-7393 > http://www.fsl.orst.edu/lemma/gnnfire > > _______________________________________________ > R-sig-Geo mailing list > [email protected] > https://stat.ethz.ch/mailman/listinfo/r-sig-geo > _______________________________________________ R-sig-Geo mailing list [email protected] https://stat.ethz.ch/mailman/listinfo/r-sig-geo
