Variogram Editor
In the main dialog of the variogram editor, a variogram based on input data is shown with a fitted model . The experimental variogram is illustrated as black dots while the variogram model is illustrated as a red curve.
__Edit: __ A variogram model is autofitted input data.
__»: __
The structure dialog opens, where the autofitted parameters are available, see Structure below.
Note: this documentation describes the user interface and parameters. However, full documentation of variogram analysis and model construction is a complex subject and is beyond the scope of this text.
Note: The dialog is used for both 2D and 3D interpolation. When working in 2D all parameters that are used only for 3D are disabled.
**Structures **
The Variogram Structure is used to edit the parameters for individual variogram model structures.
Nugget: Nugget effect (has no effect on the Power structure).
TIP: When Nugget = 0 the fitting is disabled.
Contribution: Contribution or scale of the structure.
Structure Type: Available structures are: Spherical, Exponential, Gaussian, Power, and Cosine Hole.
Tip: The Spherical and exponential structures are the most common structures to use.
Angle 1: Clockwise rotation angle of Y-axis from north.
Angle 2: Vertical rotation angle of (rotated) Y-axis from horizontal. Used in 3D only.
Angle 3: Rotation around (rotated) Y-axis (plunge). Used in 3D only.
AHMax: Horizontal range in primary direction of anisotropy (rotated Y-axis).
AHMin: Horizontal range in secondary direction of anisotropy (rotated X-axis).
AHVert: Vertical range in direction of lowest anisotropy (rotated Z-axis). Used in 3D only.
Add: Adds a new default structure to the variogram model.
Delete: Deletes the selected structure
Fit: Fits structure type to data
__«: __ The structures dialog closes
Advanced: Opens the advanced variogram settings dialog, Advanced Variogram Settings
Simulation: Opens a Variogram simulation window enabling visualization of a variogram realization
Simulation: Opens a simulation window enabling visualization of a variogram realization