Topology Overlay Analysis - Analysis Type dialog box

Use this dialog box to select the type of overlay analysis to perform: Intersect, Union, Identity, Erase, Clip, or Paste.

To overlay topologies, both must be loaded into the current drawing. Click Analyze tabDrawing Object panelLoad Topology. Find

Overlay Analysis Operations

Select an overlay operation:

• Intersect – Only areas that appear in both the source and overlay topologies are in the result topology.
  

  Source Overlay Result

• Union – Areas that appear in either the source or the overlay topologies are in the result topology.
  

  Source Overlay Result

• Identity – The result topology includes areas that appear in the source topology and areas in the overlay topology that are within the source topology boundary.
  

  Source Overlay Result

• Erase – The result topology includes areas that appear in the source topology except where it is covered by the overlay topology. The area covered by the overlay topology is erased from the source topology area.
  

  Source Overlay Result

• Clip – The result topology includes areas that appear in the source topology except where they are outside the boundary of the overlay topology. The source topology is clipped to the outer boundary of the overlay topology.
  

  Source Overlay Result

• Paste – The overlay topology is "pasted" on the source topology. The result topology includes the overlay topology and any areas of the source topology that extend beyond the boundaries of the overlay topology.
  

  Source Overlay Result

Load

Use settings that you previously saved.

Save

Save the current settings so you can use them again.

Cancel

Close the dialog box without performing the topology overlay analysis.

Back

Disabled because this is the first dialog box in the list.

Next

Click to display the Topology Overlay Analysis - Select Overlay Topology dialog box.

Finish

Perform the topology overlay using the current settings. The Finish is available after you select the overlay topology and enter a valid topology name for the resulting topology.