Map overlays give you a way to combine any number of
contour, wireframe, vector, base, and post maps. Draping a filled contour map
over a wireframe map produces the most striking display of 3D data possible. And
because you can overlay any number of maps, you can show any amount of data on a
single map.
This map was created by
overlaying two contour maps, a basemap,
and a wireframe map in order to display contaminate spread.
