On 09/01/2011 08:09 PM, Olavo Borges D'Antonio wrote: > Hello, > > I was following the sample in the grass book and I'm getting a error > message using gstat.cv. > message is: > >> pe1 <- gstat.cv(t2, debug.leve=0, random=FALSE)$residual > Error in unique(fold) : object 'fold' not found
This is a programming error. You can resolve it with pe1 <- gstat.cv(t2, debug.level=0, random=FALSE, nfold=nrow(x)) where you replace x with the data set used to create t2 (or, alternatively, t2$data[[1]]$data ) Hth, > > I appreciate if anyone could show me where is the error. > > thanks. > -- 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 [email protected] _______________________________________________ grass-stats mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-stats
