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[ai-geostats] Re: A question on conditional simulations

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  • Isobel Clark
    How many simulations did you do? Isobel Abhijith Titus D souza wrote: Hello List: First of all I would like to thank all of you for
    Message 1 of 2 , Nov 15, 2005
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      How many simulations did you do?
      Isobel

      Abhijith Titus D'souza <abhijitidz_4@...> wrote:
      Hello List:

      First of all I would like to thank all of you for your
      feedback on my earlier question.

      Just as an exercise I conducted conditional simulation
      on my dataset. I used the turning bands algorithm
      method and the sequential gaussian method. While the
      turning bands method produced a similar map as
      compared to IDW and kriging, sequential gaussian
      produced an interesting map. It matched the estimation
      maps from IDW and kriging only in those neighborhoods
      which contained the sample values. For neighborhoods
      containing no sample values it tended to overestimate,
      i.e as one went away from the sample values the SG
      method overestimated while the estimation maps did
      not.The maps were the average of 100 realizations.I
      was wondering if someone could tell me why this
      happens. I am still trying to figure out the theory
      behind the simulation methods, but it seems too far
      fetched for me.

      Thanks
      Abhijith



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