All, First of all a happy 2009 to everyone!
I have a few (beginner?) questions about the neighborhood size (number of points) for Kriging, in particular in 3D: 1) Firstly, I would just like to hear some user experiences - what number have you used in the past? Was that 3D? What range of numbers would you normally test? 2) If I understand correctly, Kriging weights can become negative, but I get the impression that normally the large majority of the weights are positive. Could I therefore assume that if I use 100 points, then the smallest weights are likely to be (much) smaller than 0.01? 3) I understand that (except for simple Kriging), it can be usefull to use a larger search neighborhood than the variogram range. What about the opposite, if you have relatively dense sampling, and there are many points within, say, one tenth of the range? Many thanks, Greg + + To post a message to the list, send it to ai-geostats@jrc.it + To unsubscribe, send email to majordomo@ jrc.it with no subject and "unsubscribe ai-geostats" in the message body. DO NOT SEND Subscribe/Unsubscribe requests to the list + As a general service to list users, please remember to post a summary of any useful responses to your questions. + Support to the forum can be found at http://www.ai-geostats.org/
