In an experimental setup we obtain z-data samples at equidistant grid points.
The surf.gls (Kriging) algorithm produces an error under this circumstance when performing the Choleski decomposition. A workaround is to dither the grid coordinates using (x <- rnorm(length(x)) ; y<- rnowm(length(y))). Question: Is this an expected behaviour of the surf.gls function ? Regards, Berthold --------------------------------- Dr. Berthold Stegemann Senior Scientist Bakken Research Center Heart Failure Management Endepolsdomein 5 6229 GW Maastricht The Netherlands Office: +31.43.3566.613 Mobile: +31.6.5335.1669 Fax: +31.43.3566.509 ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
