external kriging
The external kriging module allows users to perform estimation using grids created in EVS (with or without layers or lithology) in GeoEAS, which supports advanced variography and kriging techniques. Grids and data are exported from EVS in GeoEAS format, kriged externally, and the results can then be read back into EVS and treated as if they were kriged natively.
This is an advanced module intended for users with experience in GeoEAS and geostatistics. C Tech does not provide technical support for the use of GeoEAS.
The workflow has three stages: export the data (Export Data group), export the grid (Export Grid group), run the external kriging in GeoEAS, then import the results (Import Data group).
Ports
| Direction | Name | Type | Description |
|---|---|---|---|
| Input | Z Scale | Number | The factor for vertical scaling. |
| Input | Input Data | Field | A field containing nodal data to be exported for kriging. |
| Input | Input Grid | Field | A field for the grid to which data will be kriged. |
| Output | Output | Field | A field containing the selected imported data. |
Properties
| Property | Type | Description |
|---|---|---|
| Z Scale | Double | The vertical exaggeration applied to ensure that external kriging occurs in the correct coordinate space. |
| Translate Coordinates | Boolean | When enabled, translates the entire model back to the origin based on the Translate Values input. If the input values are left at 0.0, the translation is calculated based on the centroid of the model. |
| Translate Values | Coordinates (X, Y, Z) | If Translate Coordinates is enabled, translates the entire model back to the origin using these X, Y, and Z values. If left at 0.0, the values are calculated from the centroid of the model. |
Export Data
| Property | Type | Description |
|---|---|---|
| Exponentiate Exported Log Data | Boolean | If any nodal data is log-processed, enabling this toggle will exponentiate it before export. |
| Export Nodal Data For Output | Multi-select | Selects the nodal data components to include in the exported data file. Options are populated from the connected input data field. |
| Export Data Filename | File | The filename for the exported data file (GeoEAS format). |
Export Grid Requires Grid
| Property | Type | Description |
|---|---|---|
| Exponentiate Log Grid Data | Boolean | If there is log-processed data on the grid, enabling this toggle will exponentiate it when exported. |
| Nodal Data For Grid Output | Multi-select | Selects the nodal data components to include in the exported grid file. Options are populated from the connected input data field. |
| Export Grid Filename | File | The filename for the exported grid file (GeoEAS format). |
Import Data Requires Grid
| Property | Type | Description |
|---|---|---|
| Import Data Filename | File | The data file to import after external kriging has been performed in GeoEAS. |
| Execute | Button | Forces the module to import the specified data file. Only enabled when an import filename has been specified. |