{"$schema":"https://proj.org/schemas/v0.7/projjson.schema.json","type":"CompoundCRS","name":"RGM23 + IGN 2023 Mayotte height","components":[{"type":"GeographicCRS","name":"RGM23","datum":{"type":"GeodeticReferenceFrame","name":"Mayotte Geodetic Reference Frame 2023","ellipsoid":{"name":"GRS 1980","semi_major_axis":6378137,"inverse_flattening":298.257222101}},"coordinate_system":{"subtype":"ellipsoidal","axis":[{"name":"Geodetic latitude","abbreviation":"Lat","direction":"north","unit":"degree"},{"name":"Geodetic longitude","abbreviation":"Lon","direction":"east","unit":"degree"}]},"remarks":"Replaces RGM04 (CRS code 4470) with effect from 2023-01-01. See CRS code 10673 for alternate system with axes reversed used by IGN for GIS purposes."},{"type":"VerticalCRS","name":"IGN 2023 Mayotte height","datum":{"type":"VerticalReferenceFrame","name":"IGN 2023 Mayotte"},"coordinate_system":{"subtype":"vertical","axis":[{"name":"Gravity-related height","abbreviation":"H","direction":"up","unit":"metre"}]}}],"scope":"Reversible geoid model transformation.","area":"Mayotte - onshore.","bbox":{"south_latitude":-13.05,"west_longitude":44.98,"north_latitude":-12.61,"east_longitude":45.35},"id":{"authority":"EPSG","code":11158}}