Loading ...
Sorry, an error occurred while loading the content.

928Re: AI-GEOSTATS: mean of residuals in simple kriging with means

Expand Messages
  • Pierre Goovaerts
    Mar 1 3:49 PM
    • 0 Attachment
      Hi Lorenz,

      As long as the mean is known and assumed constant
      across the study area, you can apply simple kriging.
      There is no need for that mean to be zero.

      Cheers,

      Pierre

      <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>

      Dr. Pierre Goovaerts
      President of PGeostat, LLC
      Chief Scientist with Biomedware Inc.
      710 Ridgemont Lane
      Ann Arbor, Michigan, 48103-1535, U.S.A.

      E-mail: goovaert@...
      Phone: (734) 668-9900
      Fax: (734) 668-7788
      http://alumni.engin.umich.edu/~goovaert/

      <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><>

      On Mon, 24 Feb 2003, Dobler, Lorenz wrote:

      > hello list,
      >
      >
      > in simple kriging with means the mean of residuals is presumed to be zero.
      > if i derive (varying) local means from (correct) regression analysis,
      > residuals usually (should) satisfy the condition of zero mean. but if i use
      > predefined/"regional" (varying) local means i have some problems because the
      > mean of residual is far away from zero.
      >
      > is it absolutely necessecary in simple kriging with vaying local means that
      > the mean of residuals is really zero ?
      > if yes what can i do because my residuals are far awya from zero?
      >
      > i would be glad if someone could give some advice
      >
      > regards
      >
      > Lenz
      >
      >
      >
      >
      >
      >
      > Lorenz Dobler
      > Bayerisches Geologisches Landesamt
      > (Geological Survey of Bavaria)
      > Heßstrasss 128
      > D-80797 München
      > Germany
      > Tel.: 0049/(0)89/9214-2756
      > email: Lorenz.Dobler@...
      > http://www.geologie.bayern.de/
      >
      >
      > --
      > * To post a message to the list, send it to ai-geostats@...
      > * As a general service to the users, please remember to post a summary of any useful responses to your questions.
      > * To unsubscribe, send an email to majordomo@... with no subject and "unsubscribe ai-geostats" followed by "end" on the next line in the message body. DO NOT SEND Subscribe/Unsubscribe requests to the list
      > * Support to the list is provided at http://www.ai-geostats.org
      >


      --
      * To post a message to the list, send it to ai-geostats@...
      * As a general service to the users, please remember to post a summary of any useful responses to your questions.
      * To unsubscribe, send an email to majordomo@... with no subject and "unsubscribe ai-geostats" followed by "end" on the next line in the message body. DO NOT SEND Subscribe/Unsubscribe requests to the list
      * Support to the list is provided at http://www.ai-geostats.org
    • Show all 4 messages in this topic