To virtually collapse edges into vertices, in the Geometry toolbar, from the Virtual Operations menu (), select Collapse Edges (). Then enter the properties of the operation using the following sections:

Select the edges that you want to collapse in the Graphics window. They then appear in the Edges to collapse list. If the geometry sequence includes user-defined selections above the Collapse Edges node, choose Manual to select edges, or choose one of the selection nodes from the list next to Edges to collapse.

Click the Active button to toggle between turning ON and OFF the Edges to collapse selections.

Select the Ignore merged vertices check box to ignore the resulting merged vertices (if possible).

The operation collapses an edge by removing it, merging its adjacent vertices to the vertex with lowest index, and reconnecting the adjacent edges to the merged vertex.