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Re: AI-GEOSTATS: Estimating the fixed Sill in the Elliptic Anisotropy

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  • Isobel Clark
    ... It is usual to fit the sill to an omni-directional semi-variogram graph, since that has most pairs on all points. The ranges can then be fitted
    Message 1 of 2 , Sep 4, 2001
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      > " How can we estimate Sill and Range in all
      > directions by supposing that the sill is fixed?
      It is usual to fit the sill to an omni-directional
      semi-variogram graph, since that has most pairs on all
      points.

      The ranges can then be fitted individually.

      The alternate is to 'contour' the experimental
      semi-variograms in many directions and fit one
      ellipoidal surface to the 'map'.

      Isobel


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