CTDB Format: Terrain and Soil
Terrain can be stored as
- Elevation Grid Posts
- With accompanying soil grid that references the PAT for each elevation post.
- Can have polygonal microterrain stored with the features for higher resolution elevation information.
- Triangulated Irregular Networks (TIN)
- Stored as polygonal data with topological information to make elevation lookups faster.
- Each polygon references the Polygon Attribute Table (PAT) for soil and mobility information.