Fly around the World

While the currenty layout of the Landcover-DB is a simple translation of the previous FlightGear Scenery landcover schema to a standard-compilant storage, future improvements will affect the underlying schema significantly.

The future layout will feature only few different layers wherein the different coverage types will be represented by respective attributes. The layers are:

  1. landuse (physical and vegetal coverage, builtup areas, polygon- as well as line data, the latter for hedges and similar application)
  2. water (every type of line and polygon data that relates to inland water)
  3. roads (every type of road of different structure, width and surface)
  4. railway (single/multiple railway lines as well as railroad yards)
  5. airstrips (runways, taxiways)
  6. highlights (significant scenery objects like those stored in the FlightGear Scenery Objects Database)

Different objects share the same surface declaration schema which means turf on plain earth has the same surface attribute as turf on a small road or on an airfiled runway (same with asphlat, concrete ....). This is implemented by one of the respective layer attributes:

  1. nam (name of rivers, towns, probably an identifier that refers to the Getty Thesaurus of Geographic Names)
  2. sur (surface of roads, airfield runways, maybe according to X-Plane Airport data file definitions)
  3. typ (type as landuse: deciduous forest, evergreen forest, grass, shrub; transport: road, freeway, railroad, runway, taxiway;)
  4. wid (width in meters)
  5. cnt (count no of lanes for roads and railroads, separator for roads)
  6. col (colour of rivers)

 

Martin Spott; 20061207