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Question about the anisotropy factor in the sum metric spatiotemporalcovariance gstat

2 messages · sara osama, Dr. Benedikt Gräler

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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
2 days later
#
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: