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Geoscience > Main Launcher > Grid Menu > Clear

Grid Clear

The Grid Clear dialog allows you to clear all or select data points on a grid that are contained within selected polygons. Note: If no polygons are selected all values in the grid will be cleared out.

ClosedHow do I clear a grid?

  1. Select the grid(s) to be cleared.

  2. Set a constraining polygon to limit the geographical extents of the clearing operation.

  3. Click to clear the grid.

  4. Note: If you want to delete a grid completely, it is easier to do it from the Grid Properties dialog.


ClosedHow do I clear outlier data points from a grid?

  1. Select the grid(s) to be cleared.

  2. (Optional) Set a constraining polygon to limit the geographical extents of the clearing operation.

  3. Set upper and lower Grid Value Constraints. Note: Upper and lower constraints can be set simultaneously. Grid Clearing will clear all data points that do not fall between the limits.

  4. Click  to clear the outlier data points.

General Information


Select Grid 

Select the grid(s) you want included in the clearing operation.  Left click to select a grid, or use the Ctrl key on your keyboard to select multiple grids, and then use the selection arrows to move the grids to the Selected list. Alternately, you can move a single grid to the Selected list by double clicking on it.

To help you make your grid selections, you can sort any column by left clicking on the column header, you can apply a filter (), or you can type a search string into the search bar to limit the list using Name, or Owner information.

For additional selection and navigation options right click on the list of grids to access the shortcut menu.

Constraints

Options for constraining the set of data points to be cleared.

Polygons: Open theSelect Polygons dialog and select inclusion or exclusion polygons to restrict the geographical extents of the grid clearing operation. If you use an inclusion polygon, the portion of the grid that lies inside this polygon will be cleared. If you use an exclusion polygon, the portion of the grid that lies outside of the polygon will be cleared.

Grid Value Constraints:The optional upper and lower limits for data points. Values outside of these bounds will be cleared if the option is checked on. If neither option is checked on, all included data points will be cleared.

Clear values greater than: Enable this option and enter a value. Values greater than the value you enter will be cleared, and all other values will be untouched.

Clear values less than: Enable this option and enter a value. Values less than the value you enter will be cleared, and all other values will be untouched.


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