Ash Resource Fragment for TMF675 GeographicLocation — geometry-bearing Place (a point or polygon region in WGS-84).

Compose with BasePlace on a concrete leaf to require the BasePlace geometry attributes (location or bounds) be set, add the accuracy attribute, and carry the TMF675 GeoJson wire shape through BasePlace's existing encode_geo_json/2 customize.

Diffo.Provider.GeographicLocation uses this fragment directly as the out-of-the-box TMF GeographicLocation resource. Domain extenders compose the same two fragments on their own leaf.

Attributes

• accuracy — float, meters of positional accuracy (TMF675 accuracy field). Free-form numeric; not constrained.

Geometry (inherited from BasePlace)

• location — AshGeo.GeoJson (:point, WGS-84). %Geo.Point{coordinates: {lon, lat}, srid: 4326}.
• bounds — AshGeo.GeoJson (:polygon, WGS-84). %Geo.Polygon{coordinates: [ring], srid: 4326}.

Tightened validation

BasePlace already enforces:

• At most one of [location, bounds] may be set.
• Geometry is only allowed when type == :GeographicLocation.

This fragment adds the inverse direction:

• type == :GeographicLocation requires at least one of [location, bounds] set.

Wire shape (TMF675)

Inherits BasePlace's encode_geo_json/2 customize which rebrands @type to GeoJsonPoint or GeoJsonPolygon and emits the geometry as a TMF675 geoJson field with @baseType: "GeographicLocation".