[R-sig-Geo] range from fit.variogram

Edzer Pebesma edzer.pebesma at uni-muenster.de
Wed Apr 21 21:44:11 CEST 2010

That is right, Mark; the adjustment factor is dependent on the model
used (Gaussian, it seems, in your case); e.g. for the exponential it
would be 3 * a. And of course depends also on how you define practical
range in the cases where the variogram reaches the sill asymptotically.

Mark Connolly wrote:
> I think the range determined by fit.variogram is not the "practical"
> range as mentioned in Applied Spatial Data Analysis with R.  Do I have
> this right?  To get the range used for interpolation, I adjust the range
> (eg. 3^0.5 * range)?
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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      e.pebesma at wwu.de

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