analytical realization
The analytical realization module is one of three similar modules (the other two are lithologic realization and stratigraphic realization), which allows you to very quickly generate statistical realizations of your 2D and 3D kriged models based upon C Tech’s Proprietary Extended Gaussian Geostatistical Simulation (GGS) technology, which we refer to as Fast Geostatistical Realizations^®^ or FGR^®^. Our extensions to GGS allow you to:
- Create realizations very rapidly
- Exercise greater control over the frequency and magnitude of noise typical in GGS
- Control deviation magnitudes from the nominal kriged prediction based on a Min Max Confidence Equivalent
- Deviations are the absolute value of the changes to the analytical prediction (in user units)
- Apply Simple or Advanced Anisotropy control over 2D or 3D wavelengths
C Tech’s FGR^®^ creates more plausible cases (realizations) which allow the nominal concentrations to deviate from the peak of the bell curve (equal probability of being an under-prediction as an over-prediction) by the same user-defined confidence. FGR allows the deviations to be both positive (max) and negative (min), and to fluctuate in a more realistic randomized manner.
Ports
| Direction | Name | Type | Description |
|---|---|---|---|
| Input | Analytical Grid Data | Realization | Information required for direct exporting of analytical grid data. |
| Output | Output Field | Field | The main output field representing geologic materials. |
| Output | Deviations Field | Field | A field containing deviation values by which the data has been shifted. |
| Output | Output Object | Renderable | A renderable object displaying the variography created by the module. Output even when Allow Run is off. |
Properties
| Property | Type | Description |
|---|---|---|
| Allow Run | Boolean | Controls whether the module will run when applications are loaded or data changes. When on, the module runs when applications are loaded or the Execute button is pushed. When off, the module will not run unless Execute is pressed. |
| Execute | Button | Forces the module to run even if the Allow Run toggle has been turned off. Allows the user to make a number of changes before updating. |
| Realization Method | Choice: Random Shift, Min-Max Plume | Selects the type of modification applied to the analytical data. |
| Nodal Data Component | Choice | Selects which nodal data will be modified. |
Fast Geostatistical Realization
| Property | Type | Description |
|---|---|---|
| Randomness Generator Type | Choice: Type1, Type2, Type3, Type4 | Determines the nature of the Realization deviation patterns. |
| Anisotropy | Anisotropy | Controls the anisotropy of the realization noise via heading, dip, roll, and axis ratios. |
| Seed | Double | Used in the random number generator to make realizations reproducible. |
| Wavelength | Double | Affects the Randomness Generator. This value is in your coordinate system units. Small values produce an output with higher frequency changes. |
| Min Max Confidence Equivalent | Double | Realization deviations from the nominal kriged results will be constrained to lie within the equivalent Min/Max (plume) bounds. Must lie between 51.00% and 99.995%. Theoretically 50% is the same as the nominal kriged result. |
Min Max Plume Settings
| Property | Type | Description |
|---|---|---|
| Min Max Confidence | Double | Specifies what interval around the kriged model estimates the kriging confidence or uncertainty will apply to. |
| Auxillary Realization Data | Multi-select: Max Plume, Min Plume | Selects which data components generated during realization to generate for the output field on a node by node basis. |
Variography Display
| Property | Type | Description |
|---|---|---|
| Variography Z Scale | Double | The vertical exaggeration to be applied to the output variography ellipsoid and lines. |
| Display Variogram Ellipsoid | Boolean | Allows the user to display the variography ellipsoid. |
| Ellipsoid Opacity | Double | Sets the opacity of the ellipsoid directly. |
| Resolution | Integer | The resolution to use for the ellipsoid. Larger numbers create more detailed representations. |
| Ellipsoid Scale | Double | Scales the ellipsoid equally along each axis. |
| X Offset | Double | Translates the ellipsoid along the x axis. |
| Y Offset | Double | Translates the ellipsoid along the y axis. |
| Z Offset | Double | Translates the ellipsoid along the z axis. |
| Ellipsoid Color | Color | The ellipsoid is a solid color which can be selected using this control. |
| Display Variogram Lines | Boolean | Allows the user to display lines aligned with the variography ellipsoid. |
| Line Scale | Double | A scalar that sets the length of the variogram lines relative to the scale of the ellipsoid. |
| Primary Ratio Color | Color | The primary ratio axis color. |
| Secondary Ratio Color | Color | The secondary ratio axis color. |
| Tertiary Axis Color | Color | The tertiary axis color. |