Interface for terrain altitude reference.
  Granularity | Defines the distance between sampling points along a vehicle route, used when waypoint altitudes are referenced to terrain. Uses Distance Dimension. | 
  InterpMethod | Gets or sets the terrain interpolation method to be used to define the height of the vehicle with respect to terrain data. | 
| Implemented Interface | 
|---|
| IAgVeWayPtAltitudeRef | 





