The grid extraction option allows the extracting of a part of an existing grid to be removed to a grid from the grid shown in the Layer Control paneldifferent grid layer. This option can be implemented by using either a selected grid block or a polyline overlaid on the selected grid as described below.
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- Select the Add a New Polyline from the main toolbar to draw a new polygon (or import an existing polygon if the data file is available).
- Start drawing a polygon that overlays a grid in the workspace (LMC to start and RMC to end drawing)
- From the main toolbar, select the Select object button, then click on the polygon. It will be highlighted as shown Figure 3.
- Select the grid layer in the Layer Control by LMC on that grid layer
- RMC on the workspace to show RMC 's options, then select Extract Grid Inside the Selected Polygon option. A new grid layer will be created in the Layer Control as Figure 4.
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