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Remarks: Used by OMV.
Information source: OGP
Revision date: 2020-03-14
Unit: metre
Geodetic CRS: Tananarive (Paris)
Datum: Tananarive 1925 (Paris)
Ellipsoid: International 1924
Prime meridian: Paris
Data source: EPSG
Revision date: 1995-06-02
Scope: Engineering survey, topographic mapping.
Area of use: Madagascar - onshore.
Coordinate system: Cartesian 2D CS. Axes: easting, northing (X,Y). Orientations: east, north. UoM: m.
&stroke=red&width=2&path=-25.64,43.18|-11.89,43.18|-11.89,50.56|-25.64,50.56|-25.64,43.18)
Center coordinates
445630.14 815027.18
Projected bounds:
45120.79 46898.56
849612.88 1575713.67
WGS84 bounds:
43.18 -25.64
50.56 -11.89
Definition: OGC Well Known Text 2 (2019)
BOUNDCRS[ SOURCECRS[ BOUNDCRS[ SOURCECRS[ PROJCRS["Tananarive (Paris) / Laborde Grid", BASEGEOGCRS["Tananarive (Paris)", DATUM["Tananarive 1925 (Paris)", ELLIPSOID["International 1924",6378388,297, LENGTHUNIT["metre",1]]], PRIMEM["Paris",2.5969213, ANGLEUNIT["grad",0.0157079632679489]], ID["EPSG",4810]], CONVERSION["Laborde Grid approximation", METHOD["Hotine Oblique Mercator (variant B)", ID["EPSG",9815]], PARAMETER["Latitude of projection centre",-21, ANGLEUNIT["grad",0.0157079632679489], ID["EPSG",8811]], PARAMETER["Longitude of projection centre",49, ANGLEUNIT["grad",0.0157079632679489], ID["EPSG",8812]], PARAMETER["Azimuth of initial line",21, ANGLEUNIT["grad",0.0157079632679489], ID["EPSG",8813]], PARAMETER["Angle from Rectified to Skew Grid",21, ANGLEUNIT["grad",0.0157079632679489], ID["EPSG",8814]], PARAMETER["Scale factor on initial line",0.9995, SCALEUNIT["unity",1], ID["EPSG",8815]], PARAMETER["Easting at projection centre",400000, LENGTHUNIT["metre",1], ID["EPSG",8816]], PARAMETER["Northing at projection centre",800000, LENGTHUNIT["metre",1], ID["EPSG",8817]]], CS[Cartesian,2], AXIS["easting (X)",east, ORDER[1], LENGTHUNIT["metre",1]], AXIS["northing (Y)",north, ORDER[2], LENGTHUNIT["metre",1]], ID["EPSG",29700]]], TARGETCRS[ GEOGCRS["Tananarive", DATUM["Tananarive 1925", ELLIPSOID["International 1924",6378388,297, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], CS[ellipsoidal,2], AXIS["geodetic latitude (Lat)",north, ORDER[1], ANGLEUNIT["degree",0.0174532925199433]], AXIS["geodetic longitude (Lon)",east, ORDER[2], ANGLEUNIT["degree",0.0174532925199433]], ID["EPSG",4297]]], ABRIDGEDTRANSFORMATION["Tananarive (Paris) to Tananarive (1)", METHOD["Longitude rotation", ID["EPSG",9601]], PARAMETER["Longitude offset",8414.02501199997, ID["EPSG",8602]], ID["EPSG",1265]]]], TARGETCRS[ GEOGCRS["WGS 84", ENSEMBLE["World Geodetic System 1984 ensemble", MEMBER["World Geodetic System 1984 (Transit)"], MEMBER["World Geodetic System 1984 (G730)"], MEMBER["World Geodetic System 1984 (G873)"], MEMBER["World Geodetic System 1984 (G1150)"], MEMBER["World Geodetic System 1984 (G1674)"], MEMBER["World Geodetic System 1984 (G1762)"], MEMBER["World Geodetic System 1984 (G2139)"], ELLIPSOID["WGS 84",6378137,298.257223563, LENGTHUNIT["metre",1]], ENSEMBLEACCURACY[2.0]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], CS[ellipsoidal,2], AXIS["geodetic latitude (Lat)",north, ORDER[1], ANGLEUNIT["degree",0.0174532925199433]], AXIS["geodetic longitude (Lon)",east, ORDER[2], ANGLEUNIT["degree",0.0174532925199433]], USAGE[ SCOPE["Horizontal component of 3D system."], AREA["World."], BBOX[-90,-180,90,180]], ID["EPSG",4326]]], ABRIDGEDTRANSFORMATION["Tananarive to WGS 84 (2)", METHOD["Geocentric translations (geog2D domain)", ID["EPSG",9603]], PARAMETER["X-axis translation",-198.383, ID["EPSG",8605]], PARAMETER["Y-axis translation",-240.517, ID["EPSG",8606]], PARAMETER["Z-axis translation",-107.909, ID["EPSG",8607]], USAGE[ SCOPE["Transformation of coordinates at 3m level of accuracy."], AREA["Madagascar - onshore and nearshore."], BBOX[-26.59,42.53,-11.69,51.03]], ID["EPSG",6873], REMARK["Derived at 9 points throughout Madagascar. Adopted by OMV."]]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "BoundCRS", "source_crs": { "type": "BoundCRS", "source_crs": { "type": "ProjectedCRS", "name": "Tananarive (Paris) / Laborde Grid", "base_crs": { "name": "Tananarive (Paris)", "datum": { "type": "GeodeticReferenceFrame", "name": "Tananarive 1925 (Paris)", "ellipsoid": { "name": "International 1924", "semi_major_axis": 6378388, "inverse_flattening": 297 }, "prime_meridian": { "name": "Paris", "longitude": { "value": 2.5969213, "unit": { "type": "AngularUnit", "name": "grad", "conversion_factor": 0.0157079632679489 } } } }, "coordinate_system": { "subtype": "ellipsoidal", "axis": [ { "name": "Geodetic latitude", "abbreviation": "Lat", "direction": "north", "unit": { "type": "AngularUnit", "name": "grad", "conversion_factor": 0.0157079632679489 } }, { "name": "Geodetic longitude", "abbreviation": "Lon", "direction": "east", "unit": { "type": "AngularUnit", "name": "grad", "conversion_factor": 0.0157079632679489 } } ] }, "id": { "authority": "EPSG", "code": 4810 } }, "conversion": { "name": "Laborde Grid approximation", "method": { "name": "Hotine Oblique Mercator (variant B)", "id": { "authority": "EPSG", "code": 9815 } }, "parameters": [ { "name": "Latitude of projection centre", "value": -21, "unit": { "type": "AngularUnit", "name": "grad", "conversion_factor": 0.0157079632679489 }, "id": { "authority": "EPSG", "code": 8811 } }, { "name": "Longitude of projection centre", "value": 49, "unit": { "type": "AngularUnit", "name": "grad", "conversion_factor": 0.0157079632679489 }, "id": { "authority": "EPSG", "code": 8812 } }, { "name": "Azimuth of initial line", "value": 21, "unit": { "type": "AngularUnit", "name": "grad", "conversion_factor": 0.0157079632679489 }, "id": { "authority": "EPSG", "code": 8813 } }, { "name": "Angle from Rectified to Skew Grid", "value": 21, "unit": { "type": "AngularUnit", "name": "grad", "conversion_factor": 0.0157079632679489 }, "id": { "authority": "EPSG", "code": 8814 } }, { "name": "Scale factor on initial line", "value": 0.9995, "unit": "unity", "id": { "authority": "EPSG", "code": 8815 } }, { "name": "Easting at projection centre", "value": 400000, "unit": "metre", "id": { "authority": "EPSG", "code": 8816 } }, { "name": "Northing at projection centre", "value": 800000, "unit": "metre", "id": { "authority": "EPSG", "code": 8817 } } ] }, "coordinate_system": { "subtype": "Cartesian", "axis": [ { "name": "Easting", "abbreviation": "X", "direction": "east", "unit": "metre" }, { "name": "Northing", "abbreviation": "Y", "direction": "north", "unit": "metre" } ] }, "id": { "authority": "EPSG", "code": 29700 } }, "target_crs": { "type": "GeographicCRS", "name": "Tananarive", "datum": { "type": "GeodeticReferenceFrame", "name": "Tananarive 1925", "ellipsoid": { "name": "International 1924", "semi_major_axis": 6378388, "inverse_flattening": 297 } }, "coordinate_system": { "subtype": "ellipsoidal", "axis": [ { "name": "Geodetic latitude", "abbreviation": "Lat", "direction": "north", "unit": "degree" }, { "name": "Geodetic longitude", "abbreviation": "Lon", "direction": "east", "unit": "degree" } ] }, "id": { "authority": "EPSG", "code": 4297 } }, "transformation": { "name": "Tananarive (Paris) to Tananarive (1)", "source_crs": { "type": "GeographicCRS", "name": "Tananarive (Paris) (with Greenwich prime meridian)", "datum": { "type": "GeodeticReferenceFrame", "name": "Tananarive 1925 (Paris) (with Greenwich prime meridian)", "ellipsoid": { "name": "International 1924", "semi_major_axis": 6378388, "inverse_flattening": 297 } }, "coordinate_system": { "subtype": "ellipsoidal", "axis": [ { "name": "Geodetic latitude", "abbreviation": "Lat", "direction": "north", "unit": { "type": "AngularUnit", "name": "grad", "conversion_factor": 0.0157079632679489 } }, { "name": "Geodetic longitude", "abbreviation": "Lon", "direction": "east", "unit": { "type": "AngularUnit", "name": "grad", "conversion_factor": 0.0157079632679489 } } ] } }, "method": { "name": "Longitude rotation", "id": { "authority": "EPSG", "code": 9601 } }, "parameters": [ { "name": "Longitude offset", "value": 2.5969213, "unit": { "type": "AngularUnit", "name": "grad", "conversion_factor": 0.0157079632679489 }, "id": { "authority": "EPSG", "code": 8602 } } ], "id": { "authority": "EPSG", "code": 1265 } } }, "target_crs": { "type": "GeographicCRS", "name": "WGS 84", "datum_ensemble": { "name": "World Geodetic System 1984 ensemble", "members": [ { "name": "World Geodetic System 1984 (Transit)", "id": { "authority": "EPSG", "code": 1166 } }, { "name": "World Geodetic System 1984 (G730)", "id": { "authority": "EPSG", "code": 1152 } }, { "name": "World Geodetic System 1984 (G873)", "id": { "authority": "EPSG", "code": 1153 } }, { "name": "World Geodetic System 1984 (G1150)", "id": { "authority": "EPSG", "code": 1154 } }, { "name": "World Geodetic System 1984 (G1674)", "id": { "authority": "EPSG", "code": 1155 } }, { "name": "World Geodetic System 1984 (G1762)", "id": { "authority": "EPSG", "code": 1156 } }, { "name": "World Geodetic System 1984 (G2139)", "id": { "authority": "EPSG", "code": 1309 } } ], "ellipsoid": { "name": "WGS 84", "semi_major_axis": 6378137, "inverse_flattening": 298.257223563 }, "accuracy": "2.0", "id": { "authority": "EPSG", "code": 6326 } }, "coordinate_system": { "subtype": "ellipsoidal", "axis": [ { "name": "Geodetic latitude", "abbreviation": "Lat", "direction": "north", "unit": "degree" }, { "name": "Geodetic longitude", "abbreviation": "Lon", "direction": "east", "unit": "degree" } ] }, "id": { "authority": "EPSG", "code": 4326 } }, "transformation": { "name": "Tananarive to WGS 84 (2)", "source_crs": { "type": "GeographicCRS", "name": "Tananarive", "datum": { "type": "GeodeticReferenceFrame", "name": "Tananarive 1925", "ellipsoid": { "name": "International 1924", "semi_major_axis": 6378388, "inverse_flattening": 297 } }, "coordinate_system": { "subtype": "ellipsoidal", "axis": [ { "name": "Geodetic latitude", "abbreviation": "Lat", "direction": "north", "unit": "degree" }, { "name": "Geodetic longitude", "abbreviation": "Lon", "direction": "east", "unit": "degree" } ] }, "id": { "authority": "EPSG", "code": 4297 } }, "method": { "name": "Geocentric translations (geog2D domain)", "id": { "authority": "EPSG", "code": 9603 } }, "parameters": [ { "name": "X-axis translation", "value": -198.383, "unit": "metre", "id": { "authority": "EPSG", "code": 8605 } }, { "name": "Y-axis translation", "value": -240.517, "unit": "metre", "id": { "authority": "EPSG", "code": 8606 } }, { "name": "Z-axis translation", "value": -107.909, "unit": "metre", "id": { "authority": "EPSG", "code": 8607 } } ], "id": { "authority": "EPSG", "code": 6873 } } }
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=omerc +lat_0=-18.9 +lonc=44.1 +alpha=18.9 +gamma=18.9 +k=0.9995 +x_0=400000 +y_0=800000 +ellps=intl +pm=paris +towgs84=-198.383,-240.517,-107.909,0,0,0,0 +units=m +no_defs +type=crs"> <Layer srs="+proj=omerc +lat_0=-18.9 +lonc=44.1 +alpha=18.9 +gamma=18.9 +k=0.9995 +x_0=400000 +y_0=800000 +ellps=intl +pm=paris +towgs84=-198.383,-240.517,-107.909,0,0,0,0 +units=m +no_defs +type=crs"> </Layer> </Map>
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