RockWorks | Utilities | Grid | Stats | Normalize
The grid normalization filter is used to re-compute the grid node values such that they range between a user specified minimum and maximum. This filter is useful when looking for relationships between models that are expressed in different units. For example, if you're looking for areas where there's a correlation between mercury and antimony, normalize both grids and divide one by the other.
This tool requires that a real-number RockWorks grid model (.RwGrd file) already exists.
Menu Options
Step-by-Step Summary
Menu Options
- Input Model: Click to the right to browse for the name of an existing .RwGrd grid model (e.g. geochemistry).
- Output Model: Click to the right to enter the name of the normalized grid model that is to be created.
- New Minimum Value: Click here to type in the real number value that the minimum grid node value in the source grid file is to be re-assigned.
- New Maximum Value: Type here the real number value that the maximum existing grid node value is to be re-assigned.
- Create 2-Dimensional Grid Diagram: Insert a check in this check-box if you want to display the output grid as a 2D map at this time. Expand this heading to set up the 2D map layers (bitmap, symbols, labels, line contours, color-filled contours, labeled cells, and/or map border).
- Create 3-Dimensional Grid Diagram: Insert a check in this check-box if you want to display the output grid as a 3D surface. Expand this heading to set up the 3D map layers (flat surface, Boolean colors, perimeter, reference cage). You can request both a 2D and 3D representation of the grid model.
- Create Grid Statistics Report: Insert a check here if you want to see a report summarizing the output grid.
- Include Standard Deviation: Check this box if you want the report to include standard deviation.
- Include Directional Analysis: Check this box to include slope, aspect, and strike computations. Be warned that these can take a few moments for large grid models.
Step-by-Step Summary
- Access the RockWorks Utilities program tab. It is not necessary to enter data into the main datasheet because RockWorks will not be creating a new model.
- Select the Grid | Statisticss | Normalize menu option.
- Enter the requested menu settings, described above.
- Click the Process button to continue.
The program will load the input grid model, assign the lowest node value the declared minimum value, and the highest node value the declared maximum. It will the re-assign the remaining nodes the appropriate proportional intermediate values. The resulting normalized node values will be stored in a new grid file (.RwGrd) on disk under the output file name you selected. The requested diagram(s) will be displayed in a RockPlot2D tab and/or RockPlot3D tab in the Options window. If you requested a statistics report, it will be displayed in a Text Tab in the Options window.
- You can adjust any of the settings in the Options window and then click the Process button again to regenerate the diagram(s).
! Each time you click the Process button, the existing display(s) will be replaced.
- View / save / manipulate / export / print the diagram in the RockPlot2D or RockPlot3D window.
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