Engineering survey, topographic mapping.
Netherlands - onshore, including Waddenzee, Dutch Wadden Islands and 12-mile offshore coastal zone.
Definition: OGC Well Known Text
COMPD_CS["RD/NAP", GEOGCS["Amersfoort", DATUM["Amersfoort", SPHEROID["Bessel 1841",6377397.155,299.1528128, AUTHORITY["EPSG","7004"]], AUTHORITY["EPSG","6289"]], PRIMEM["Greenwich",0, AUTHORITY["EPSG","8901"]], UNIT["degree",0.0174532925199433, AUTHORITY["EPSG","9122"]], AUTHORITY["EPSG","4289"]], VERT_CS["NAP height", VERT_DATUM["Normaal Amsterdams Peil",2005, AUTHORITY["EPSG","5109"]], UNIT["metre",1, AUTHORITY["EPSG","9001"]], AXIS["Gravity-related height",UP], AUTHORITY["EPSG","5709"]], AUTHORITY["EPSG","7408"]]
Definition: OGC Well Known Text 2 (2019)
COMPOUNDCRS["RD/NAP", GEOGCRS["Amersfoort", DATUM["Amersfoort", ELLIPSOID["Bessel 1841",6377397.155,299.1528128, 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]]], VERTCRS["NAP height", VDATUM["Normaal Amsterdams Peil"], CS[vertical,1], AXIS["gravity-related height (H)",up, LENGTHUNIT["metre",1]]], USAGE[ SCOPE["Engineering survey, topographic mapping."], AREA["Netherlands - onshore, including Waddenzee, Dutch Wadden Islands and 12-mile offshore coastal zone."], BBOX[50.75,3.2,53.7,7.22]], ID["EPSG",7408]]
Definition: ESRI Well Known Text
GEOGCS["GCS_Amersfoort", DATUM["D_Amersfoort", SPHEROID["Bessel_1841",6377397.155,299.1528128]], PRIMEM["Greenwich",0.0], UNIT["Degree",0.0174532925199433]], VERTCS["NAP", VDATUM["Normaal_Amsterdams_Peil"], PARAMETER["Vertical_Shift",0.0], PARAMETER["Direction",1.0], UNIT["Meter",1.0]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "CompoundCRS", "name": "RD/NAP", "components": [ { "type": "GeographicCRS", "name": "Amersfoort", "datum": { "type": "GeodeticReferenceFrame", "name": "Amersfoort", "ellipsoid": { "name": "Bessel 1841", "semi_major_axis": 6377397.155, "inverse_flattening": 299.1528128 } }, "coordinate_system": { "subtype": "ellipsoidal", "axis": [ { "name": "Geodetic latitude", "abbreviation": "Lat", "direction": "north", "unit": "degree" }, { "name": "Geodetic longitude", "abbreviation": "Lon", "direction": "east", "unit": "degree" } ] } }, { "type": "VerticalCRS", "name": "NAP height", "datum": { "type": "VerticalReferenceFrame", "name": "Normaal Amsterdams Peil" }, "coordinate_system": { "subtype": "vertical", "axis": [ { "name": "Gravity-related height", "abbreviation": "H", "direction": "up", "unit": "metre" } ] } } ], "scope": "Engineering survey, topographic mapping.", "area": "Netherlands - onshore, including Waddenzee, Dutch Wadden Islands and 12-mile offshore coastal zone.", "bbox": { "south_latitude": 50.75, "west_longitude": 3.2, "north_latitude": 53.7, "east_longitude": 7.22 }, "id": { "authority": "EPSG", "code": 7408 } }
Definition: GeoServer
7408=COMPD_CS["RD/NAP",GEOGCS["Amersfoort",DATUM["Amersfoort",SPHEROID["Bessel 1841",6377397.155,299.1528128,AUTHORITY["EPSG","7004"]],AUTHORITY["EPSG","6289"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4289"]],VERT_CS["NAP height",VERT_DATUM["Normaal Amsterdams Peil",2005,AUTHORITY["EPSG","5109"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","5709"]],AUTHORITY["EPSG","7408"]]
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=longlat +ellps=bessel +vunits=m +no_defs +type=crs"> <Layer srs="+proj=longlat +ellps=bessel +vunits=m +no_defs +type=crs"> </Layer> </Map>
Definition: SQL (PostGIS)
INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 7408, 'EPSG', 7408, '+proj=longlat +ellps=bessel +vunits=m +no_defs +type=crs', 'COMPD_CS["RD/NAP",GEOGCS["Amersfoort",DATUM["Amersfoort",SPHEROID["Bessel 1841",6377397.155,299.1528128,AUTHORITY["EPSG","7004"]],AUTHORITY["EPSG","6289"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4289"]],VERT_CS["NAP height",VERT_DATUM["Normaal Amsterdams Peil",2005,AUTHORITY["EPSG","5109"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Gravity-related height",UP],AUTHORITY["EPSG","5709"]],AUTHORITY["EPSG","7408"]]');