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Re: [ai-geostats] Very high value

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  • Fran Manns
    MessageIt is also worthwhile to look at a log-uniform probability plot. ... From: Glover, Tim To: Freddie De Bruin ; ai-geostats@unil.ch Sent: Tuesday, October
    Message 1 of 4 , Oct 11, 2005
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      It is also worthwhile to look at a log-uniform probability plot.
      ----- Original Message -----
      Sent: Tuesday, October 11, 2005 8:51 AM
      Subject: RE: [ai-geostats] Very high value

      Have you looked at the data to see if a log-normal population model is more appropriate than a normal one?  Do the very high values actually belong in the data set or are they evidence of two different populations (for instance, "background" and "contamination" or maybe "country rock" and "ore"?)

      Tim Glover
      Senior Environmental Scientist - Geochemistry
      Geoenvironmental Department
      MACTEC Engineering and Consulting, Inc.
      Kennesaw, Georgia, USA
      Office 770-421-3310
      Fax 770-421-3486
      Email ntglover@...
      Web www.mactec.com

      -----Original Message-----
      From: Freddie De Bruin [mailto:Freddie.DeBruin@...]
      Sent: Tuesday, October 11, 2005 1:30 AM
      To: ai-geostats@...
      Subject: [ai-geostats] Very high value

      Dear list

      I am working with a data set that as some very high values, can you pls help with any suggestions on the capping of the data for setting up variograms calculations.

      Then do the capped data get used for the kriging process.

      Thank you
      Freddie de Bruin
      Snr Geologist
      Harmony Gold Mine
      Office 011 411 2288
      Cell 082 874 2033

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