Message-ID: <4BCF558B.90501@uni-muenster.de>
Date: 2010-04-21T19:44:11Z
From: Edzer Pebesma
Subject: range from fit.variogram
In-Reply-To: <1271877698.5945.8.camel@localhost>
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.
--
Edzer
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 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