Engineering survey and topographic mapping for railway applications.
Created in 2021 to support intermediate CRS "MRH21-IRF" in the emulation of the MRH21 Snake map projection.
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "GeodeticReferenceFrame", "name": "MRH21 Intermediate Reference Frame", "ellipsoid": { "name": "GRS 1980", "semi_major_axis": 6378137, "inverse_flattening": 298.257222101 }, "scope": "Engineering survey and topographic mapping for railway applications.", "area": "United Kingdom (UK) - on or related to Midland Rail Hub, covering routes through Cardiff, Bristol, Gloucester, Derby, Birmingham, Leicester, and Lincoln.", "bbox": { "south_latitude": 51.35, "west_longitude": -3.27, "north_latitude": 53.26, "east_longitude": -0.36 }, "id": { "authority": "EPSG", "code": 1314 } }