Replace Solid Model Node Values based on One or Two Grid Surfaces

RockWorks | ModOps | Solid | Filters | Solid & Grid(s)

This program is used to replace node values within a solid model - either an existing model or a new model - based on one or more surfaces. The filtering surfaces can be RockWorks grid models, horizontal planes, or inclined planes. You can replace nodes above and/or between and/or below the surface(s). You can specify the replacement values as a constant, null, or nodes from a separate model. You can also request the replacement nodes be a multiple of the current nodes. You can define the range of current node values to be replaced.

! The input solid model and the input grid file(s) must have the same dimensions and numbers of nodes in the X and Y directions in order for this filter to work. If you aren't sure, you can use the Statistics Report option in the Grid and Solid menus to view a summary of model dimensions and node spacing for grid and solid models, respectively.

In the example at the top of the page, a new solid was generated with nodes above an upper and below a lower stratigraphic surface are assigned fixed values, while the nodes in the middle are assigned the values from a lithology model.

Feature Level: RockWorks Basic and higher

Menu Options
Step-by-Step Summary

Menu Options

• 3D Log Design
  If you decide to include logs with this diagram (3D Solid Diagram | Striplogs), click on this tab at the top of the window to set up how you want the 3D logs to look.
  See Visible Item Summary and Using the 3D Log Designer for details.
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• Rules & Filters
  Use these tabs at the top of the window to apply spatial filters, time/date filters, or stratigraphic rules to data being displayed in your 3D striplogs. (More info)
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• Input/Output
  • Create New Solid Model: Choose this option if a new model is to be created as a result of the grid filtering.
    • Solid Model File to be Created: Click to the right to type in a name for the new solid model (RwMod file) to be created.
    • Default G Value: Use these settings to assign the solid model node default value.
      • Null: Click this if the default value for the solid model nodes should be the RockWorks null value (-1.0e27).
      • Other: Click this to type in a different value for the solid node default value.
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  • Modify Existing Solid Model: Click this button if you want to modify an existing solid model.
    • Input Model: Click to the right to browse for the name of the existing RockWorks solid model (.RwMod) 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 filtering operation.
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• Filter Options: Click this tab to set up the grid filter(s).
  • Single Surface: These options will filter the solid with one grid.
    • Surface type: Click this tab to specify the nature of the filtering surface. See the Surface Type heading, below.
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    • Modify Nodes Above Surface: Check this option if the nodes above the single surface are to be modified. (You can modify nodes both above and below the surface.)
      • Filter Type: Use these settings to define what type of filter is to be applied. See the Filter Type heading, below.
      • Replacement Value: Define what values are to replace the original model nodes. See the Replacement Value heading, below.
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    • Modify Nodes Below Surface: Check this option if the nodes below the single surface are to be modified.
      • Filter Type: Use these settings to define what type of filter is to be applied. See the Filter Type heading, below.
      • Replacement Value: Define what values are to replace the original model nodes. See the Replacement Value heading, below.
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  • Two Surfaces: These options will filter the solid with two grids.
    • Upper Surface type: Click this tab to specify the nature of the upper filtering surface. See the Surface Type heading, below.
    • Lower Surface type: Click this tab to specify the nature of the lower filtering surface. See the Surface Type heading, below.
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    • Modify Nodes Above Upper Surface: Check this option if the nodes above the upper surface are to be modified. Note that you can check multiple filters.
      • Filter Type: Use these settings to define what type of filter is to be applied. See the Filter Type heading, below.
      • Replacement Value: Define what values are to replace the original model nodes. See the Replacement Value heading, below.
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    • Modify Nodes Between Surfaces: Check this option if the nodes between the upper and lower surfaces are to be modified. You can activate multiple filters.
      • Filter Type: Define what type of filter is to be applied. See the Filter Type heading, below.
      • Replacement Value: Define what values are to replace the original model nodes. See the Replacement Value heading, below.
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    • Modify Nodes Below Lower Surface: Check this if the nodes below the lower surface are to be modified.
      • Filter Type: Define what type of filter is to be applied. See the Filter Type heading, below.
      • Replacement Value: Define what values are to replace the original model nodes. See the Replacement Value heading, below.
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• 3D Solid Diagram
  Check this box to display the output solid as a 3D voxel or isosurface diagram at this time.
  Click this tab to set up the 3D solid layers (isosurface, voxels, reference cage, etc.).
  
  • Output Options: Use these settings to define whether the output scene is to be saved (or displayed as "untitled"), how the file should be named, and whether it is to be displayed after it is created. It also offers export options. (More info)
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Surface type: Click this tab to specify the nature of the filtering surface(s).

• Grid Model: Choose this option if the surface is a RockWorks grid model (RwGrd file) which already exists. Browse for the name of the grid model.
  ! The grid model must have the same extents and X, Y node spacing as the solid model being filtered.
• Horizontal Plane: Choose this if the filtering surface is a horizontal plane that extends across the project area. Type in the elevation for this horizontal plane.
• Inclined Plane: Choose this if the filtering surface is an inclined plane. Establish the plane settings:
  • Dip Direction: Type in the 0 - 360 dip direction of the plane.
  • Dip Amount: Type in the dip angle of the plane, in degrees, using a format of 0 = horizontal, -90 straight down, 90 = straight up.
  • Reference (Pivot) Point: The output surface will be adjusted such that the inclined plane intersects this point.
    • X: Easting at reference point.
    • Y: Northing at reference point.
    • Z: Elevation at reference point.
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Filter Type: Use these settings to define what type of filter is to be applied.

• Replace All Nodes: Select this to replace all nodes above/below/between the surface(s) with the Replacement Value you define below.
• Replace Only Nodes within a Specified G Value Range: Choose this to replace only selected nodes with the Replacement Value.
  • Replace Nodes Greater Than: Enter the minimum value for the range of node values to be replaced. To replace all low values in the model, enter a very low-value number such as "-99999".
  • Replace Nodes Less Than: Enter the maximum value for the range of node values to be replaced. To replace all high values in the model, enter a very high-value number such as "999999".
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Replacement Value: Define what values are to replace the original model nodes.

• Null (-1.0e27): Choose this if the nodes defined under Filter Type are to be replaced by the RockWare null value.
• Fixed Value: Choose this if the nodes defined under Filter Type are to be replaced by a specific value. Enter that value into the prompt.
• Multiply Existing Value by Constant: This option will multiple the value stored at each node to be modified by a constant value. Enter that into the prompt.
• Corresponding Nodes from Another Solid Model: Choose this if the nodes to be modified are to be replaced by the values at corresponding nodes in a separate solid model.
  For example, if the source model represented a stratigraphy solid, you could replace nodes above a bedrock surface with nodes from a lithology model, to merge the two.
  • Solid Model: Browse for the name of the existing model whose nodes are to replace the source nodes. The two models must have the same extents and node spacing.
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Step-by-Step Summary

1. Select the ModOps | Solid | Filter | Solid & Grid(s) menu option.
2. Enter the requested menu settings, described above.
3. Click the Continue button to proceed.

   RockWorks will start by reading the contents of the input solid model file, or by initializing a new model.

   It will compare the location of each of the solid model nodes to the elevations in the input grid file (one surface) or grid files (two surfaces). It will perform the requested node replacements above and/or between and/or below the grid surface(s). The resulting solid model file will be stored under the declared output file name.

   If you have requested a diagram, it will be displayed in a RockPlot3D tab.

4. You can adjust any of the input settings via the Options tab to the left and click the Continue button again to regenerate the model and display.
5. View / save / manipulate / print the image in the RockPlot3D window.
   

See also

• Adding this program to your Playlist
• Adding this program to your Favorites
• Save/load/view menu settings
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Back to Solid Menu Summary

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