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