Segmenting a large mesh

[mlambert43]

Good morning All! I am using CC for the first time and am having trouble segmenting a mesh. This is about a 3.5 mile roadway so the size may be part of it but so far I was able to bring in the point clouds, merge them, bring in checkpoints and verify that they are aligned on the rectified survey coordinates and make a mesh. Segmenting the point cloud was easy but now I am trying to crop/segment the mesh. I have import a DXF polyline which is what I used for the point cloud but when I try to do the mesh it immediately says the operation is paused. Nothing happens. When I unpause there is no evidence of what state the application is in. Any advice would be greatly appreciated.

[daniel]

So one issue might be that the scissors tool doesn't segment the triangles but only keeps the triangles fully inside the polygon.

However, it doesn't really correspond to what you observe... maybe you should make sure that the mesh is selected (and not its vertices).