Adrian > The question is if no information about position > exist in the variogram, only distance, what is the > mathematic cause of these effect? The position information is included in the kriging equations. The left hand side of the equations included the semi-variogram between every pair of samples. In this way, the system knows the complete sample layout when it optimises the weights.
See how this works in our kriging game by moving samples around. The distance to the 'unsampled' location determines the right hand side of the equations. The inter-sample relationships are the left hand side. Not really so mystic Isobel http://geoecosse.bizland.com/softwares ________________________________________________________________________ Want to chat instantly with your online friends? Get the FREE Yahoo! Messenger http://mail.messenger.yahoo.co.uk -- * 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
