Is there a way to delete INTERIOR triangles. I tried using the delete with line tool and no triangles were deleted (after a LONG wait).
Is the Terrain ruled ?
I think that if the Terrain is ruled you can't edit it. If you remove any rules it had you should be able to delete the triangles.
Try removing the rules if it has any any editing it again. If it doesn't have any rules, come back to me.
Bentley Civil Support
You could draw a closed shape and then add it to the terrain as a Draped Void element - the area inside the shape will be 'deleted'. The element does not need to have any levels, as it will be draped onto the terrain.
I'm not sure about "ruled". The dtm was created by importing a .las file. I looked at the properties and don't see any reference to rules.
It's a dtm created from a lidar data set of a coastal area. I want to delete the water between the islands and mainland. Creating a shape would be very difficult given the thousands of points defining the water edges.
You have topographic map features which show the location of the water edge right? I would copy these and make a complex shape from them, or use the flood fill capability of create region to make a shape of the water area.
Then, since the topo features may be 2D, add this shape to the terrain model as a drape void.
Also, in the future, I would adjust my deliverable spec for my LiDAR subs to require that the water areas of the point cloud be removed or properly classified.
Robert Garrett Senior Consultant