Applying a Solid Model Stripping Filter

RockWorks | Utilities | Solid | Filters | Stripping Filter

This program filters high or low G values from the surface of a solid model file downward, until a value outside the specified range is encountered and the filtering will stop.  This is different from a solid model range filter which reassigns all nodes outside the specified G-value range regardless of where they occur in a model.

Use:  Strip values from the ground downward in a real number or integer solid model file.  For example, a lithology model could be stripped of sand that overlays a clay layer while still maintaining the pockets of sand below the clay.  

Menu Options
Step-by-Step Summary
 

Menu Options

• Input Model: Click to the right to browse for the name of the existing RockWorks solid model (.RwMod file) that the program is to read and filter. 
• Output Model: Click to the right to type in the name to assign to the new solid model that the program will create, which results from the range filtering operation.
  
  
• Low Filter: Insert a check here if you want to filter out low G-values from the input solid model, starting at the top and reading downward, until a greater node value is encountered.  
  • Threshold: Click on this item to enter the minimum acceptable node value. All surface nodes with lesser G values will be reassigned a null, until a G value greater than this threshold is encountered.
• High Filter: Insert a check here if you want to filter out high G-values from the input solid model, starting at the top and reading downward, until a lesser node value is encountered.
  ! You may activate both the high and low filters.
  • Threshold: Click here to enter the maximum acceptable node value. Any surface nodes with greater G values will be reassigned a null, until a G value greater than this threshold is encountered.
    
    
• Create 3-Dimensional Diagram: Insert a check here if you want to create a plottable 3D diagram of the resulting solid model. Expand this item to establish the diagram settings. 
  • Diagram Type: Choose Isosurface to display the solid model as if enclosed in a "skin". Choose All Voxels to display color-coded voxels. (More.)
  • Iso-Mesh: Use this option to plot a series of polylines that represent three-dimensional contours at a user-defined cutoff. Expand the heading to establish the settings.  (More.)
  • Color Scheme: Click on the Options button to the right to access a variety of pre-set color schemes, or to create your own.  (More.)
  • Reference Cage: Insert a check here to include vertical elevation axes and X and Y coordinate axes in the 3D diagram. Expand this item to set up the cage items.  (More.)
  • Include Legend: Insert a check here to include an index to the colors and G values in the diagram.  (More.)
  
  

Step-by-Step Summary

1. Double-check that you have a RockWorks solid model (*.RwMod file) which will be the input file for this program.
2. Access the RockWorks Utilities program tab. It is not necessary to enter data into the main datasheet because RockWorks will be manipulating an existing solid model. 
3. Select the Solid | Filters | Stripping Filter menu option. 
4. Enter the requested menu settings, described above.
5. Click the Process button to proceed.
   
   The program will proceed to filter the model.  Here's how:
   • The program will load the input solid model. 
   • Starting at the uppermost nodes in the model, it will compare the G value of each node to the declared filter range(s), 
   • If the node value is less than the minimum or greater than the maximum threshold, the node will be reassigned a null value. 
   • This process continues downward until a node is encountered that does not fall outside the threshold, and filtering at that location will stop. 
     ! This means that nodes with G values outside the threshold which lie lower in the model will be retained.
   • The results will be stored on disk under the output solid model name.
   • If you have requested a diagram, it will be displayed in a RockPlot3D tab in the Options window. 
      
6. You can adjust any of the input options along the left side of the window and click the Process button again to regenerate the model and display.

   ! Each time you click the Process button, the existing 3D display will be replaced.

7. View / save / manipulate / print / export the image in the RockPlot3D window.
   
   

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