CTDB Format Abstract Features (cont.)
Soil Defragmentation Areas
- Areas of uniform mobility - lakes, marshes, etc.
- Includes a level attribute for nesting soil defrag areas
- e.g., An island in a lake
Steep Slope Areas
- Generated from elevation data in a post processing step
Off road Segments
- Linear precomputed trafficability networks that do not follow physical features
Tactical Signs
- Areas identified as tactically dangerous - minefields
Railroads, pipelines, political boundaries, map labels