hello
I need basic explanation of variogram
and how to use in R.
I will appreciate if you supply them.
regards
Ahmet Temiz
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XamimeLT - installed on mailserver for domain @deprem.gov.tr
Queries to: postmaster at deprem.gov.tr
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orkun wrote:> hello > > I need basic explanation of variogram > and how to use in R.Why do you want to use something (variogram) you do not even know? Please read the posting guide, in particular the sections on "homework" and "cross posting". Uwe Ligges> > I will appreciate if you supply them. > > regards > > Ahmet Temiz > > ______________________________________ > XamimeLT - installed on mailserver for domain @deprem.gov.tr > Queries to: postmaster at deprem.gov.tr > ______________________________________ > The views and opinions expressed in this e-mail message are ...{{dropped}} > > ______________________________________________ > R-help at stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Hi,
Semi-variogram is defined as sum of observation difference between pairs
of certain range of distance divided by 2N.
Gamma(h) = 1 / 2N(h) (Sum (z(u)-z(u+h))^2)
You can take look 'GSLIB: Geostatistical Software Library and User's
Guide' Oxford University Press (CV Deutsch & AG Journel).
I'm new to R, so I don't really know spatial analysis package, but
I'm
sure there is. If not you can use GSLIB, which is almost as
user-unfriendly as R - at least for me.
Hope this helps.
SANGHOON KANG, PhD
Microbial Ecology & Functional Genomics Group
Environmental Science Division
Oak Ridge National Laboratory
p.865.574.7321 f.865.576.8543
http://sanghoonkang.wo.to <http://sanghoonkang.wo.to/>
http://www.esd.ornl.gov/people/kang
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