on 14/03/01 3:36, Sara Kustron at [EMAIL PROTECTED] wrote:
> I've read that Variowin uses "non-ergotic"
> covariance. Exactly what is this and how does it differ from regular
> old covariance? I just want to make sure I understand the
> assumptions of using non-ergotic covariance to estimate model
> parameters.
Non-ergodic covariances account for possibly changing means
across the region. Means used are different at h- and h+,
so the covariance formula is slightly different. Refer
Isaak/Srivastava's book Applied Geostatistics for the definition.
It's decidedly more "robust" to non-stationarity.
Syed
--
* 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
