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Suppose that a grid is loaded in the workplace and the user want wants to delete the grid node on that grid.
- LMC on the grid layer in the Layer Control to select the grid want to working work with.
- From the main toolbar, select Delete node button then LMC on a grid node to delete node as shown in Figure 1 Delete Grid Node (some nodes inside the blue ellipse has have been deleted).
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- LMC on the grid layer in the Layer Control to select the grid want to working work with.
- From the main toolbar, select Select object button then LMC on a grid node, the selected node will be highlighted.
- From the keyboard, hold the Shift key and LMC on another grid node, the grid block defined by the two selected nodes will be highlighted
- RMC to display options, select Delete Grid Block to delete the grid points inside the block as shown in Figure 2 Delete Grid Node and the result is shown in Figure 3 Delete Grid Node.
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Figure 2 Delete grid nodes inside a grid block.
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Apply from step 1 to 3 similarly to the delete grid nodes inside a grid block described above, in the step 4, select Delete Grid Nodes Outside a Block to delete the grid points outside the block as shown in Figure 4 1149927473.
Anchor Figure 4 Figure 4
Figure 4 Delete grid nodes outside a grid block.
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Delete grid nodes inside polygon
From the main toolbar, select Add a new polyline button then start draw drawing the polyline by LMC and end by RMC (the polyline overlay the grid) as shown in Figure 5 Delete Grid Node. In case, the polyline file is available from external source, the user can skip the drawing polyline steps and load the polyline file into the workplace.
- Select the Select object button from the main toolbar, LMC on the polyline, it will be highlighted.
- LMC on the grid layer in the Layer Control (the selected polygon is still highlighted).
- Now RMC, a number of options will be displayed, select Delete Grid Nodes Inside the Selected Polygon to delete the grid points inside the polygon as shown in Figure 6 Delete Grid Node
Anchor Figure 5 Figure 5
Figure 5 Add a new polyline.
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Delete grid nodes outside polygon
Apply from step steps 1 to 3 similarly to the delete grid nodes inside a polygon described above, in the step 4, select Delete Grid Nodes Outside the Selected Polygon to delete the grid points outside the polygon as shown in Figure 7 Delete Grid Node
Anchor Figure 7 Figure 7
Figure 7 Delete grid nodes outside a polygon.
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