Anisotropic Variogram Map (2d) in GS⁺

The Anisotropic Variogram Surface or Variogram Map provides a visual picture of semivariance in every compass direction. This allows one to more easily find the appropriate principal axis for defining the anisotropic variogram model. A transect in any single direction (e.g. 10 degrees north) is equivalent to the variogram in that direction: the surface (z-axis) is semivariance; the x and y axes are separation distances in E-W and N-S directions, respectively. The center of the map corresponds to the origin of the variogram for every direction. The map can also be projected as a 3d surface via the Edit Graph command. This window is accessed from the main Autocorrelation Analysis window.