Re: [R-sig-Geo] how is variance defined in krige {gstats}

2006-12-06 Thread Alexander.Herr
@stat.math.ethz.ch Subject: Re: [R-sig-Geo] how is variance defined in krige {gstats} Dear Herry, Details on kriging variance are given in several books on geostatistics. For example the following book: (Chiles1999) Chiles, J. & Delfiner, P. Geostatistics: Modeling Spatial Uncertainty John W

Re: [R-sig-Geo] how is variance defined in krige {gstats}

2006-12-06 Thread Paul Hiemstra
Dear Herry, Details on kriging variance are given in several books on geostatistics. For example the following book: (Chiles1999) Chiles, J. & Delfiner, P. Geostatistics: Modeling Spatial Uncertainty John Wiley & Sons, New York, 1999 A paragraph on the kriging variance is on page 176-177. How

[R-sig-Geo] how is variance defined in krige {gstats}

2006-12-05 Thread Alexander.Herr
Hi list/Edzer, I am trying to determine errors in the krige output and can't find any documentation on the details of the variance output of krige {gstats} (variable var1.var of krige output). How is this variance defined? Basically I am after a way to calculate other statistics like N, standard