Overlay shows the relationships between two existing features. OpenCities Map provides tools to perform a variety of overlay operations –you can find points that fall within polygons, lines that overlap polygons, and so forth. The result is a new layer…

Topology, or overlay analysis shows the spatial relationships between two features – do they touch each other? Is one feature contained by another? What do they have in common? Bentley Map provides tools to investigate these relationships, and can perform…