How to create an Overlay which highlights unused land

The 3D Visualization shows a combination of spatial features, such as Buildings and Terrain Types, against a backdrop of a satellite image. While this provides a complete view of the structure of the world, it can also convolute getting a clear view of the data. In addition, the presence or absence of data can sometimes be very relevant for use-cases pertaining to land utilization. For both these cases, a Grid Overlay indicating land which is or is not in use by Buildings is of added value.

Editor → Current Situation (Ribbon tab) → Overlays (Ribbon bar) → Add Average Overlay (Dropdown)

How to create an Overlay which highlights unused land:

1. Add an Average Overlay
2. Ensure the input layer is set to Buildings
3. Set the averaging distance to "0"
4. Set the averaging attribute to DEFAULT_FLOORS
5. Set the legend as follows:
6. Text: Empty
   Value: 0
   Color: Green
7. Text: Built
   Value: 0,1
   Color: Red
8. The result is a calculated Grid Overlay which has a value of 0 in places where no Building exist, and a value greater than 0 in places where a Building does exist.

Notes

• The DEFAULT_FLOORS Attribute exists for all Buildings with a minimal value of 1, (including ones which would not commonly be associated with floors, such as trees, parking lots, and pastures ).

See also

• Building
• Average Overlay
• Combo Overlay