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List:       r-sig-geo
Subject:    Re: [R-sig-Geo] Question about the anisotropy factor in the sum metric spatiotemporalcovariance gsta
From:       Dr._Benedikt_Gräler <b.graeler () 52north ! org>
Date:       2017-10-04 11:44:44
Message-ID: ffdfd137-9462-6aca-6248-644ad618feaa () 52north ! org
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Dear Sara,

the anisotropy in the metric spatio-temporal covariance models describes 
how spatial distances relate to temporal distance (i.e. to answer the 
question: At which temporal separation (x hours/days/weeks/...) do have 
two locations 1 m/km/... apart the same correlation?). Every model that 
includes the metric model has to have a spatio-temporal anisotropy 
parameter. For more details, please refer to the vignette of gstat [1].

HTH,

  Ben

[1] 
https://cran.r-project.org/web/packages/gstat/vignettes/spatio-temporal-kriging.pdf



On 02/10/2017 10:31, sara osama wrote:
> Dear all.
> I have a question about the sum metric spatiotemporalcovariance function in
> gstat. I need to understand the theoretical background and the meaning of
> the anisotropy (Anis) in it.
> If anyone can help me in this I will be deeply appreciated
> Best regards
> Sara
> 
> 	[[alternative HTML version deleted]]
> 
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-- 
Dr. Benedikt Gräler
52 °North Initiative for Geospatial Open Source Software GmbH
Martin-Luther-King-Weg 24
48155 Muenster, Germany

E-Mail: b.graeler@52north.org
Fon: +49-(0)-251/396371-39
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Twitter: @FiveTwoN

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