Editing a Geological Model
Once a geological model has been created, you can change the model’s resolution and other basic settings by double-clicking on the model in the project tree. The Geological Model window will open with the General tab selected. The other tabs in the Geological Model window represent the different parts of the geological model. It is generally more useful, however, to work with these parts of the model on an individual basis by either double-clicking on the object in the project tree or right-clicking and seeing what options are available.
The rest of this topic describes how to change the basic settings for a geological model. It is divided into:
Although the Base lithology column cannot be changed once a geological model has been created, you can change the filters applied to the data. Any filters defined for the lithology table used to define the model can be applied to the Base lithology column.
Individual surfaces in the geological model can inherit the query filter from the parent geological model or can use a different filter. To change what query filter is used for a surface, double-click on the points used to create the surface and change the Query filter setting in the Lithology tab:
The Surface resolution and Adaptive settings in the General tab apply to the model as a whole. These settings can be overridden for individual surfaces. See Surface Resolution in Leapfrog Geo and Surface Resolution for a Geological Model.
Surfaces created in building the geological model can be set to snap to the data used in the model. There are three options:
- Off. Surfaces do not snap to the data used to create them.
- All data. Surfaces snap to all data within the Maximum snap distance, which includes drillhole data and any data added to surfaces as part of the model refinement process.
- Drilling only. Surfaces snap to drillhole data within the Maximum snap distance but not to other data used to modify surfaces.
If you need surfaces to honour drillhole data but treat other data objects as interpretations, select Drilling only. If you want finer control over what objects are snapped to, you can do this on a surface-by-surface basis. See:
- Surfacing Options for Deposits and Erosions
- Surfacing Options for Intrusions
- Surfacing Options for Veins
When Exact clipping is enabled, model surfaces will be generated without “tags” that overhang the model boundary. This setting is enabled by default when you create geological model.
The Merge output lithology volumes setting determines whether or not output volumes of the same lithology are merged when the volumes are exported. If this setting is enabled, internal walls and surface seams will be removed from volumes of the same lithology. This processing can take some time, and so this setting is disabled when a geological model is first created. Enable this setting if:
- You will be using final output volumes as extents for other models. See Adjusting the Interpolant Boundary.
- You will be exporting output volumes for use in other modelling packages. See Geological Model Volumes and Surfaces Export Options for more information.