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cityjson / specs

Specifications for CityJSON, a JSON-based encoding for 3D city models
https://cityjson.org
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LoD concept for CityObjectGroup unclear #55

Closed Athelena closed 4 years ago

Athelena commented 5 years ago

A CityObjectGroup can currently have an LoD specification under geometry, but it's not clear if this is the LoD of the polygon, which is an issue as there is currently no definitions of these LoDs, or the LoD of the members, which also doesn't make sense because the members could have multiple different LoDs amongst themselves.

"CityObjects": {
  "my-neighbourhood": {
  "type": "CityObjectGroup",
    "members": ["building1", "building2"],
    "geometry": [{
      "type": "MultiSurface",
      "lod": 2,
      "boundaries": [ [[2, 4, 5]] ]
    }]
  }
}