GEOSTATS: non correlated spatial data
- RE: Cathy Schloeder's question
First of all one has to ask what is meant by the
lack of spatial autocorrelation and essentially this
has to be asked in the context of a model. Without
spatial correlation then the best interpolator is
the mean and then the question is whether this is
constant or dependent on position.
A non-constant mean would correspond to the use
of a Trend Surface. Note that the non-constant
mean might be in reference to some other characteristic
than position coordinates.
Inverse Distance Weighting, Splines, Kriging, Radial
Basis Functions all assume a form of spatial
Without spatial correlation and a constant mean
simply use the average of the data values at each
point to be interpolated. Even at data points use
the average since then the difference is simply
Donald E. Myers
University of Arizona
*To post a message to the list, send it to ai-geostats@....
*As a general service to list users, please remember to post a summary
of any useful responses to your questions.
*To unsubscribe, send email to majordomo@... with no subject and
"unsubscribe ai-geostats" in the message body.
DO NOT SEND Subscribe/Unsubscribe requests to the list!