RE: [ai-geostats] ...how to distinguish different form of stationarity...

2005-05-11 Thread sl23349
Simone, My understanding of Intrinsic Hypothesis is that it is based on the stationarity of both difference (1st order) and variance of difference (2nd order). So the statement your wrote Intrinsic hypothesis is different from second order one mainly because in the first case covariance

RE: AI-GEOSTATS: Help: spatial heterogeneity and autocorrelation indices

2004-04-21 Thread sl23349
Hi, This is a question I have been scratching my head lately. In my data, there seems to be a global range, i.e. spatial autocorrelation does imply some sort of homogeneity throughout the whole area. However, if you look into more details, some of the sub-region contains outlier and hotspot