[R-sig-Geo] gstat error

[Edzer Pebesma]

Is it possible that you're using kriging in a local neighbourhood where 
the predictor is constant?
--
Edzer

Dave Depew wrote:
> Hi
> I'm trying to run some universal kriging, and have not experienced 
> this error before.
> I've removed duplicate data locations using the remove.duplicates 
> command. The data set runs fine if the formula is set as ordinary 
> kriging, but adding in a predictor (which is already known at each 
> grid location)
> gives
>
> "lufactor.c", line 207: singular matrix in function m_inverse()
> Error in predict.gstat
>
> Any ideas?
>
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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/