Compute variograms as a proportion of sample variance
Correlograms and Covariance plots allow you to visualize both negative and positive autocorrelation when present – values near zero indicate no autocorrelation for that lag class interval.
Moran’s I is similar in interpretation to the Pearson’s Product Moment correlation statistic for independent samples in that autocorrelation values range between -1.0 and 1.0 depending on the degree of correlation.
The fractal dimension D , also called the Hausdorff-Besicovitch statistic, can be calculated as the slope of a log-log variogram plot. GS+ provides both D and its standard error.