The general relative variogram is a graph of semivariance standardized by the squared mean of the data used for each distance interval h:
Relative variograms can be calculated only for data sets for which all Z values are positive (otherwise the denominator above could equal zero). If the minimum Z value in the active data is <0, then the relative variogram will not be drawn. To avoid this problem, you can first scale or otherwise transform the data in the Data Summary window.
General relative variograms (both isotropic and anisotropic) appear in the Autocorrelation Window, on the General Relative Variogram tab. Pressing the Expand button on this tab brings up the General Relative Variograms window:
The Cloud/Scatter, right-click menu, and other commands work here as they do for the Variograms Window.