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Delete single grid node

Suppose that a grid is loaded in the workplace and the user wants to delete the grid node on that grid.

  1. LMC on the grid layer in the Layer Control to select the grid want to work with.
  2. From the main toolbar, select Delete node button then LMC on a grid node to delete node as shown in Delete Grid Node (some nodes inside the blue ellipse have been deleted).

Figure 1 Delete single grid node.

Delete grid nodes inside grid block

  1. LMC on the grid layer in the Layer Control to select the grid want to work with.
  2. From the main toolbar, select Select object button then LMC on a grid node, the selected node will be highlighted.
  3. 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
  4. RMC to display options, select Delete Grid Block to delete the grid points inside the block as shown in Delete Grid Node and the result is shown in Delete Grid Node.

Figure 2 Delete grid nodes inside a grid block.

Figure 3 Grid nodes deleted after using inside a grid block option.


Delete grid nodes outside grid block

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 Delete Grid Nodes#Figure 4.

Figure 4 Delete grid nodes outside a grid block.


Delete grid nodes inside polygon

  1. From the main toolbar, select Add a new polyline button then start drawing the polyline by LMC and end by RMC (the polyline overlay the grid) as shown in 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.

  2. Select the Select object button from the main toolbar, LMC on the polyline, it will be highlighted.
  3. LMC on the grid layer in the Layer Control (the selected polygon is still highlighted).
  4. 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 Delete Grid Node


Figure 5 Add a new polyline.

Figure 6 Delete grid nodes inside a polygon.


Delete grid nodes outside polygon

Apply from steps 1 to 3 similarly to the delete grid nodes inside a polygon described above, in step 4, select Delete Grid Nodes Outside the Selected Polygon to delete the grid points outside the polygon as shown in Delete Grid Node

Figure 7 Delete grid nodes outside a polygon.



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