[R-sig-Geo] xvalid or similar with krige.bayes()

Greetings: I need to perform LOOCV for krige.bayes(). I want to compare the output of krige.bayes to the output of other interpolation methods. I can do LOOCV easily for other interpolation methods using xvalid() in geoR or krige.cv() in gstat but I cannot find any code examples that demonstr

[R-sig-Geo] spatial autocorrelation for categorical data.

Is there any spatial autocorrelation chek (like Moran's I) for categorical data? Best Regards, Lilis Nurul Husna Institute of Statistics  Jakarta [[alternative HTML version deleted]] ___ R-sig-Geo mailing list R-sig-Geo@r-project.org https://

[R-sig-Geo] questions about STIDF objects

Hello! Is there a way to do kriging on an STIDF object, please? Probably not, but I thought that I'd check. Thanks, Erin [[alternative HTML version deleted]] ___ R-sig-Geo mailing list R-sig-Geo@r-project.org https://stat.ethz.ch/mailman/li

Re: [R-sig-Geo] Memory...

Ciao Maurizio - Try to build up your table outside R and enter in R just with the columns/rows that you need. - If you are fitting the model use y=resp , x=prdictors rather others formulas (e.g.: y ~ ) - Every time that you delate a file rm() use gc() to reallocate memory - Bash and awk can h

[R-sig-Geo] Spatial correlogram with missing data

Dear list, I'm trying to get a spatial correlogram of some environmental variables with function spdep::sp.correlogram. But the function doesn't have an argument to deal with NA's and return an error when doing a correlogram with missing data. Do you know how can I get this done with this or anothe

Re: [R-sig-Geo] Species localities to richness maps - combining rasterize() and focal()

Alastair, This probably is not what you are looking for, but if I were you, I would make a grid of points and then use a function to find species occurrence records within sequentially larger radii (or grid cells, if that is what you are after). Below are a few functions that I have utilized on