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anistropy with residuals from KED
3 messages · Tobin Cara, Edzer Pebesma, Facundo Muñoz
In general, the hope (and expectation) is that detrended residuals carry less information in the sense of less structure than the raw data. The rate with which this happens varies. I don't see any reasons why detrending would "typically" lead to isotropic residuals; it could be that the author has experienced this effect a number of times. You might want to contact him; I believe he listens on the ai-geostats mailing list.
Tobin Cara wrote:
Hello, I was reading in Goovaerts book on Geostatistics for Natural Resources Evaluation that the residuals from KED are typically isotropic. In other words, any anisotropy must be accounted for in the trend model not in the residual semivariogram. Is it the case in practice that anisotropy is never detected when finding the semivariogram with residuals or is it ignored (hopefully not)? Thank you, Cara [[alternative HTML version deleted]]
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Edzer Pebesma Institute for Geoinformatics (ifgi), University of M?nster Weseler Stra?e 253, 48151 M?nster, Germany. Phone: +49 251 8333081, Fax: +49 251 8339763 http://ifgi.uni-muenster.de http://www.52north.org/geostatistics e.pebesma at wwu.de
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