Data source: EPSG
Information source: New Zealand National Institute for Water and Atmospheric Research
Revision date: 2019-09-17
Scope: Topographic mapping (medium and small scale).
Remarks: For projects extending within the 12 nautical mile line or onshore, NIWA recommends using NZCS2000 (projection code 17964). For offshore statistical analysis see NIWA Albers (projection code 9190).
Method: Mercator (variant B)
Area of use: Southwestern Pacific Ocean and Southern Ocean areas surrounding New Zealand.
Description: (0,)
Definition: OGC Well Known Text 2 (2019)
CONVERSION["Mercator 41", METHOD["Mercator (variant B)", ID["EPSG",9805]], PARAMETER["Latitude of 1st standard parallel",-41, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8823]], PARAMETER["Longitude of natural origin",100, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8802]], PARAMETER["False easting",0, LENGTHUNIT["metre",1], ID["EPSG",8806]], PARAMETER["False northing",0, LENGTHUNIT["metre",1], ID["EPSG",8807]], ID["EPSG",19843]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "Conversion", "name": "Mercator 41", "method": { "name": "Mercator (variant B)", "id": { "authority": "EPSG", "code": 9805 } }, "parameters": [ { "name": "Latitude of 1st standard parallel", "value": -41, "unit": "degree", "id": { "authority": "EPSG", "code": 8823 } }, { "name": "Longitude of natural origin", "value": 100, "unit": "degree", "id": { "authority": "EPSG", "code": 8802 } }, { "name": "False easting", "value": 0, "unit": "metre", "id": { "authority": "EPSG", "code": 8806 } }, { "name": "False northing", "value": 0, "unit": "metre", "id": { "authority": "EPSG", "code": 8807 } } ], "id": { "authority": "EPSG", "code": 19843 } }
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=merc +lat_ts=-41 +lon_0=100 +x_0=0 +y_0=0"> <Layer srs="+proj=merc +lat_ts=-41 +lon_0=100 +x_0=0 +y_0=0"> </Layer> </Map>
Definition: SQL (PostGIS)
INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 19843, 'EPSG', 19843, '+proj=merc +lat_ts=-41 +lon_0=100 +x_0=0 +y_0=0', 'PROJECTION["Mercator_2SP"],PARAMETER["standard_parallel_1",-41],PARAMETER["central_meridian",100],PARAMETER["false_easting",0],PARAMETER["false_northing",0]');