AI-GEOSTATS: Help: spatial heterogeneity and autocorrelation indices

 Hello lists,I have a question:I am now interested in heterogeneity.  Heterogeneity is related to pattern and pattern is absence of randomness.Many indices of spatial autocorrelation have been applied to study heterogeneity. From my understanding, spatial autocorrelation indices deals with s

[ai-geostats] questions of variogram

Hello list,   I calculate variogram with my field data (21 quadrats in each plot). And I find that experimental variogram fluctuates around a constant value and has very high nugget. It may be due to the reason that the sample interval is too big. Are there any other reasons? Actually I

[ai-geostats] Trend surface analysis

Hello list, I want to know how to conduct trend surface analysis in SAS. I tried regression model and it seems it is not the right model. Will GLM work? Many thanks! Chunhua * By using the ai-geostats mailing list you agree to follow its rules ( see http://www.ai-geostats.org/help_ai-geostats.htm

[ai-geostats] Trend analysis

Thanks all for your help! * By using the ai-geostats mailing list you agree to follow its rules ( see http://www.ai-geostats.org/help_ai-geostats.htm ) * To unsubscribe to ai-geostats, send the following in the subject or in the body (plain text format) of an email message to [EMAIL PROTECTED]