Hi Joe, After the backtransform, the distribution of simulated values at each node is not Gaussian anymore and its variance can be used as a local index of uncertainty, which accounts for both the range of surrounding values and their closeness in terms of data configuration.
Regards, Pierre Goovaerts <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><> 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: [EMAIL PROTECTED] Phone: (734) 668-9900 Fax: (734) 668-7788 http://alumni.engin.umich.edu/~goovaert/ <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><> On Mon, 9 Jun 2003, Joe Geo wrote: > Dear ai-geostats > > A question about simulation > > I understand in the simulation methods SGS that each node the data a kriging > is performed than an value is drawn from a normal distribution with the > local mean (from data and previously simulated nodes captured in a search > neigbourhood) and variance defined by the kriging variance. > > My understanding of kriging variance is that this variance is really an > index of data configuration independent of the data values. This leads to > my question. > > How a set of multiple simulations capture information about the variability > of conditioning data values when the kriging variance is only a data > location index. Specifically, it is possible to have the same conditioning > data configuration but the variability of the values attached to the data > can be quite different. How is this recognised in the simulation process. > > Thanks > > Joe > > _________________________________________________________________ > Hotmail is now available on Australian mobile phones. Go to > http://ninemsn.com.au/mobilecentral/signup.asp > > > -- > * To post a message to the list, send it to [EMAIL PROTECTED] > * 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 [EMAIL PROTECTED] 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 [EMAIL PROTECTED] * 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 [EMAIL PROTECTED] 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
