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Method: Coordinate Frame rotation (geog2D domain)
Remarks: Scale difference is given by information source as 0.999999. Given in this record in ppm to assist application usage. Very similar parameter values (to slightly less precision) used for BD72 to ETRS89: see code 1652.
Information source: IGN Brussels www.ngi.be
Revision date: 2021-09-23
Unit: metre
Geodetic CRS: BD72
Datum: Reseau National Belge 1972
Ellipsoid: International 1924
Prime meridian: Greenwich
Data source: EPSG
Information source: IGN Brussels; www.ngi.be/
Revision date: 2021-06-17
Scope: Engineering survey, topographic mapping.
Remarks: Replaces 21500 (BD50 / Belge Lambert 50). An alternative - BD72 / Belgian Lambert 72 (code 31370) - was introduced in 2000 to use the standard Lambert Conic Conformal (2SP) projection method (code 9802). EPSG recommends this alternative.
Area of use: Belgium - onshore.
Coordinate system: Cartesian 2D CS. Axes: easting, northing (X,Y). Orientations: east, north. UoM: m.
&stroke=red&width=2&path=49.5,2.5|51.51,2.5|51.51,6.4|49.5,6.4|49.5,2.5)
Center coordinates
156569.52 132747.34
Projected bounds:
15460.34 20962.36
297956.06 246499.56
WGS84 bounds:
2.5 49.5
6.4 51.51
Definition: OGC Well Known Text
PROJCS["BD72 / Belge Lambert 72", GEOGCS["BD72", DATUM["Reseau_National_Belge_1972", SPHEROID["International 1924",6378388,297], TOWGS84[-99.059,53.322,-112.486,-0.419,0.83,-1.885,-1]], PRIMEM["Greenwich",0, AUTHORITY["EPSG","8901"]], UNIT["degree",0.0174532925199433, AUTHORITY["EPSG","9122"]], AUTHORITY["EPSG","4313"]], PROJECTION["Lambert_Conformal_Conic_2SP_Belgium"], PARAMETER["latitude_of_origin",90], PARAMETER["central_meridian",4.35693972222222], PARAMETER["standard_parallel_1",49.8333333333333], PARAMETER["standard_parallel_2",51.1666666666667], PARAMETER["false_easting",150000.01256], PARAMETER["false_northing",5400088.4378], UNIT["metre",1, AUTHORITY["EPSG","9001"]], AXIS["Easting",EAST], AXIS["Northing",NORTH], AUTHORITY["EPSG","31300"]]
Definition: OGC Well Known Text 2 (2019)
BOUNDCRS[ SOURCECRS[ PROJCRS["BD72 / Belge Lambert 72", BASEGEOGCRS["BD72", DATUM["Reseau National Belge 1972", ELLIPSOID["International 1924",6378388,297, LENGTHUNIT["metre",1]]], PRIMEM["Greenwich",0, ANGLEUNIT["degree",0.0174532925199433]], ID["EPSG",4313]], CONVERSION["Belge Lambert 72", METHOD["Lambert Conic Conformal (2SP Belgium)", ID["EPSG",9803]], PARAMETER["Latitude of false origin",90, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8821]], PARAMETER["Longitude of false origin",4.35693972222222, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8822]], PARAMETER["Latitude of 1st standard parallel",49.8333333333333, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8823]], PARAMETER["Latitude of 2nd standard parallel",51.1666666666667, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8824]], PARAMETER["Easting at false origin",150000.01256, LENGTHUNIT["metre",1], ID["EPSG",8826]], PARAMETER["Northing at false origin",5400088.4378, LENGTHUNIT["metre",1], ID["EPSG",8827]]], CS[Cartesian,2], AXIS["easting (X)",east, ORDER[1], LENGTHUNIT["metre",1]], AXIS["northing (Y)",north, ORDER[2], LENGTHUNIT["metre",1]], USAGE[ SCOPE["Engineering survey, topographic mapping."], AREA["Belgium - onshore."], BBOX[49.5,2.5,51.51,6.4]], ID["EPSG",31300]]], 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["Transformation from unknown to WGS84", METHOD["Position Vector transformation (geog2D domain)", ID["EPSG",9606]], PARAMETER["X-axis translation",-99.059, ID["EPSG",8605]], PARAMETER["Y-axis translation",53.322, ID["EPSG",8606]], PARAMETER["Z-axis translation",-112.486, ID["EPSG",8607]], PARAMETER["X-axis rotation",-0.419, ID["EPSG",8608]], PARAMETER["Y-axis rotation",0.83, ID["EPSG",8609]], PARAMETER["Z-axis rotation",-1.885, ID["EPSG",8610]], PARAMETER["Scale difference",0.999999, ID["EPSG",8611]]]]
Definition: ESRI Well Known Text
PROJCS["BD72_Belge_Lambert_72", GEOGCS["GCS_Belge_1972", DATUM["D_Belge_1972", SPHEROID["International_1924",6378388.0,297.0]], PRIMEM["Greenwich",0.0], UNIT["Degree",0.0174532925199433]], PROJECTION["Lambert_Conformal_Conic_2SP_Belgium"], PARAMETER["latitude_of_origin",90.0], PARAMETER["central_meridian",4.35693972222222], PARAMETER["standard_parallel_1",49.8333333333333], PARAMETER["standard_parallel_2",51.1666666666667], PARAMETER["false_easting",150000.01256], PARAMETER["false_northing",5400088.4378], UNIT["Meter",1.0]]
Definition: JavaScript (Proj4js)
proj4.defs("EPSG:31300","+proj=lcc +lat_0=90 +lon_0=4.35693972222222 +lat_1=49.8333333333333 +lat_2=51.1666666666667 +x_0=150000.01256 +y_0=5400088.4378 +ellps=intl +towgs84=-99.059,53.322,-112.486,-0.419,0.83,-1.885,-1 +units=m +no_defs +type=crs");
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "BoundCRS", "source_crs": { "type": "ProjectedCRS", "name": "BD72 / Belge Lambert 72", "base_crs": { "name": "BD72", "datum": { "type": "GeodeticReferenceFrame", "name": "Reseau National Belge 1972", "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": 4313 } }, "conversion": { "name": "Belge Lambert 72", "method": { "name": "Lambert Conic Conformal (2SP Belgium)", "id": { "authority": "EPSG", "code": 9803 } }, "parameters": [ { "name": "Latitude of false origin", "value": 90, "unit": "degree", "id": { "authority": "EPSG", "code": 8821 } }, { "name": "Longitude of false origin", "value": 4.35693972222222, "unit": "degree", "id": { "authority": "EPSG", "code": 8822 } }, { "name": "Latitude of 1st standard parallel", "value": 49.8333333333333, "unit": "degree", "id": { "authority": "EPSG", "code": 8823 } }, { "name": "Latitude of 2nd standard parallel", "value": 51.1666666666667, "unit": "degree", "id": { "authority": "EPSG", "code": 8824 } }, { "name": "Easting at false origin", "value": 150000.01256, "unit": "metre", "id": { "authority": "EPSG", "code": 8826 } }, { "name": "Northing at false origin", "value": 5400088.4378, "unit": "metre", "id": { "authority": "EPSG", "code": 8827 } } ] }, "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": 31300 } }, "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": "Transformation from unknown to WGS84", "method": { "name": "Position Vector transformation (geog2D domain)", "id": { "authority": "EPSG", "code": 9606 } }, "parameters": [ { "name": "X-axis translation", "value": -99.059, "unit": "metre", "id": { "authority": "EPSG", "code": 8605 } }, { "name": "Y-axis translation", "value": 53.322, "unit": "metre", "id": { "authority": "EPSG", "code": 8606 } }, { "name": "Z-axis translation", "value": -112.486, "unit": "metre", "id": { "authority": "EPSG", "code": 8607 } }, { "name": "X-axis rotation", "value": -0.419, "unit": { "type": "AngularUnit", "name": "arc-second", "conversion_factor": 4.84813681109536e-06 }, "id": { "authority": "EPSG", "code": 8608 } }, { "name": "Y-axis rotation", "value": 0.83, "unit": { "type": "AngularUnit", "name": "arc-second", "conversion_factor": 4.84813681109536e-06 }, "id": { "authority": "EPSG", "code": 8609 } }, { "name": "Z-axis rotation", "value": -1.885, "unit": { "type": "AngularUnit", "name": "arc-second", "conversion_factor": 4.84813681109536e-06 }, "id": { "authority": "EPSG", "code": 8610 } }, { "name": "Scale difference", "value": -1, "unit": { "type": "ScaleUnit", "name": "parts per million", "conversion_factor": 1e-06 }, "id": { "authority": "EPSG", "code": 8611 } } ] } }
Definition: GeoServer
31300=PROJCS["BD72 / Belge Lambert 72",GEOGCS["BD72",DATUM["Reseau_National_Belge_1972",SPHEROID["International 1924",6378388,297],TOWGS84[-99.059,53.322,-112.486,-0.419,0.83,-1.885,-1]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4313"]],PROJECTION["Lambert_Conformal_Conic_2SP_Belgium"],PARAMETER["latitude_of_origin",90],PARAMETER["central_meridian",4.35693972222222],PARAMETER["standard_parallel_1",49.8333333333333],PARAMETER["standard_parallel_2",51.1666666666667],PARAMETER["false_easting",150000.01256],PARAMETER["false_northing",5400088.4378],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","31300"]]
Definition: MapServer - MAPfile
PROJECTION "proj=lcc" "lat_0=90" "lon_0=4.35693972222222" "lat_1=49.8333333333333" "lat_2=51.1666666666667" "x_0=150000.01256" "y_0=5400088.4378" "ellps=intl" "towgs84=-99.059,53.322,-112.486,-0.419,0.83,-1.885,-1" "units=m" "no_defs" "type=crs" END
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=lcc +lat_0=90 +lon_0=4.35693972222222 +lat_1=49.8333333333333 +lat_2=51.1666666666667 +x_0=150000.01256 +y_0=5400088.4378 +ellps=intl +towgs84=-99.059,53.322,-112.486,-0.419,0.83,-1.885,-1 +units=m +no_defs +type=crs"> <Layer srs="+proj=lcc +lat_0=90 +lon_0=4.35693972222222 +lat_1=49.8333333333333 +lat_2=51.1666666666667 +x_0=150000.01256 +y_0=5400088.4378 +ellps=intl +towgs84=-99.059,53.322,-112.486,-0.419,0.83,-1.885,-1 +units=m +no_defs +type=crs"> </Layer> </Map>
Definition: SQL (PostGIS)
INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 31300, 'EPSG', 31300, '+proj=lcc +lat_0=90 +lon_0=4.35693972222222 +lat_1=49.8333333333333 +lat_2=51.1666666666667 +x_0=150000.01256 +y_0=5400088.4378 +ellps=intl +towgs84=-99.059,53.322,-112.486,-0.419,0.83,-1.885,-1 +units=m +no_defs +type=crs', 'PROJCS["BD72 / Belge Lambert 72",GEOGCS["BD72",DATUM["Reseau_National_Belge_1972",SPHEROID["International 1924",6378388,297],TOWGS84[-99.059,53.322,-112.486,-0.419,0.83,-1.885,-1]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4313"]],PROJECTION["Lambert_Conformal_Conic_2SP_Belgium"],PARAMETER["latitude_of_origin",90],PARAMETER["central_meridian",4.35693972222222],PARAMETER["standard_parallel_1",49.8333333333333],PARAMETER["standard_parallel_2",51.1666666666667],PARAMETER["false_easting",150000.01256],PARAMETER["false_northing",5400088.4378],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Easting",EAST],AXIS["Northing",NORTH],AUTHORITY["EPSG","31300"]]');
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