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AI-GEOSTATS: kriging with external drift

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  • Dobler, Lorenz
    hello list, how to simultanously use two variables of influence - say x and y (not coordinates!) - and use them as one external drift variable - say z -
    Message 1 of 1 , Jul 3 5:03 AM
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      hello list,

      how to simultanously use two "variables of influence" - say x and y (not
      coordinates!) -
      and use them as one external drift variable - say z - within wingslib
      (kriging with
      external drift)? what is an appropiate way of combination?:
      1. summation (z=x+y)?
      2. multiplication (z=x*y)?
      3. doing a multiple linear regression analysis first (primary variable as
      dependent variable!) and use the resulting trend (z=a+b1*x+b2*y)?
      4. any other way??
      hope somebody has some suggestions
      regards
      Lenz



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