Dear sir,
Ya, Now I am comparing the results from gslib and R/gsat. The shape of
variograms exactly overlaps but the position of points varies, I don't know
why? or it is normal! I first checked the result of omnidirectional variogram
but still to have checked for directional cases. I hope the plot will overlap
exactly on these cases too!!
Thanking you
Pujan
> Date: Wed, 7 May 2008 15:59:47 +0200> From: [EMAIL PROTECTED]> To: [EMAIL
> PROTECTED]> CC: [EMAIL PROTECTED]; r-sig-geo@stat.math.ethz.ch> Subject: Re:
> [R-sig-Geo] variogram using gstat> > 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 rat!
her than similar.> --> Edzer
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