[R-sig-Geo] variogram using gstat

Edzer Pebesma edzer.pebesma at uni-muenster.de
Wed May 7 15:59:47 CEST 2008

ONKELINX, Thierry wrote:
> Dear Pujan,
> The helpfile (?variogram) is a wonderfull thing because it answers you
> question about dist. It reads: 
> dist	 the average distance of all point pairs considered for this
> estimate	
> I think that gstat is based on gslib (Edzer, please correct me if I'm
> wrong). 
No, the gstat "core" code is written in C rather than in fortran. It was 
written in a similar time, i.e. the early 90s.
> Last year we compared gslib with R and gstat. Both yielded
> simmilar results. We prefered R and gstat over gslib because R is a more
> flexible and versatile tool.
I'm always interested in hearing comparison results, and trying to 
figure out where differences come from. In theory, results should be 
identical rather than similar.

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