Find intersections between polygons using Global Mapper

Even though Global Mapper is not a spatial analysis software, it has some limited spatial functions such as the Find Intersection of Selected Areas command. It is available in a pop up menu somewhere within the software. Here is an example of using the command.

1. Start Global Mapper 12. Load or create a polygon layer with intersecting polygons.
   
   
2. Press ALT+D.
   
   The Digitizer toolbar appears.
   
3. In the Map view, select two or more intersecting polygons.
   
   The polygons are selected.
   
   
4. Press the Mouse right button anywhere in the Map view.
   
   A pop up menu appears.
   
   
5. Choose Find Intersection of Selected Area Features.
   
   A message appears.
   
   
6. Click No.
   
   The Modify Feature Info dialog box appears.
   
   
7. Choose a Feature Type, e.g. Wetland. In the Feature Layer drop down list, choose Create New Layer for Feature. Click OK.
   
   The Enter Layer Name dialog box appears.
   
   
8. Type in a name, e.g. intersect. Click OK.
   
   The intersections are created.