On 05/15/2014 10:58 AM, Roelof Coster wrote: > Hi, > > The krigeST function has a 'nmax' parameter that sets the maximum number of > neighbouring observations to be used in the prediction. However, the help > for this function states that it does not support kriging in a local > neighbourhood. So, is this just a mistake in the help?
mistake, thanks. > > Also, in case kriging in a neighbourhood is possible, how does the function > determine this neighbourhood? How is distance in space compared to distance > in time? It uses http://cran.r-project.org/web/packages/FNN/index.html to get nearest neighbours, and, unless parameter stAnis is specified, tries to figure out a sensible space/time anisotropy from the variogram model. The source is found https://r-forge.r-project.org/scm/viewvc.php/pkg/R/krige0.R?view=markup&root=gstat and look for function krigeST.local The curent version on CRAN does not pass through parameters checkNeighbourhood and bufferNmax, just corrected this on r-forge. Wbr, > > Thanks! Roelof Coster > > [[alternative HTML version deleted]] > > _______________________________________________ > 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 Heisenbergstraße 2, 48149 Münster, Germany. Phone: +49 251 83 33081 http://ifgi.uni-muenster.de GPG key ID 0xAC227795
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