To Delete Surface TIN or Grid Lines

Use this command to remove:

• Long and narrow TIN triangles on the perimeter of a surface.
• TIN or grid lines within a pond or building foundation to create a void area to prevent contours from being drawn through the void areas.

1. To perform this operation, ensure that the surface style has triangles visibility enabled and that the OSNAP Endpoint setting is disabled. For more information, see About Surface Styles and Visualization.
   Note: TIN or grid volume surfaces do not support editing operations.
2. In Toolspace, on the Prospector tab, expand the surface Definition collection, right-click , and click Delete Line.

3. At the command line, you are prompted to select the edges (lines) to remove.

4. Click the edges that you want to remove and press Enter.
   Note: If you are deleting grid lines, select the grid lines, not the triangulation lines.

   The edges are removed. An interior border, following the adjacent TIN or grid lines, is created, or the exterior border is modified to follow the new TIN or grid lines.

   The edits are added as Delete Line or Delete Multiple Lines operations to the Edits list view in Prospector.

   Note: The Description column in the list view displays the coordinates of the vertices for the edge that was deleted.

Tutorial Exercise: Deleting TIN Lines