EPSG
Dept. of Lands and Surveys Technical Circular 1973/32; 23 Nov 1973.
2012-01-21
Engineering survey, topographic mapping.
Replaces North and South Island National Grids (codes 18141-2). Used for topographic mapping.
New Zealand - North Island, South Island, Stewart Island - onshore.
(0,)
Definition: OGC Well Known Text 2 (2019)
CONVERSION["New Zealand Map Grid", METHOD["New Zealand Map Grid", ID["EPSG",9811]], PARAMETER["Latitude of natural origin",-41, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8801]], PARAMETER["Longitude of natural origin",173, ANGLEUNIT["degree",0.0174532925199433], ID["EPSG",8802]], PARAMETER["False easting",2510000, LENGTHUNIT["metre",1], ID["EPSG",8806]], PARAMETER["False northing",6023150, LENGTHUNIT["metre",1], ID["EPSG",8807]], ID["EPSG",19917]]
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "Conversion", "name": "New Zealand Map Grid", "method": { "name": "New Zealand Map Grid", "id": { "authority": "EPSG", "code": 9811 } }, "parameters": [ { "name": "Latitude of natural origin", "value": -41, "unit": "degree", "id": { "authority": "EPSG", "code": 8801 } }, { "name": "Longitude of natural origin", "value": 173, "unit": "degree", "id": { "authority": "EPSG", "code": 8802 } }, { "name": "False easting", "value": 2510000, "unit": "metre", "id": { "authority": "EPSG", "code": 8806 } }, { "name": "False northing", "value": 6023150, "unit": "metre", "id": { "authority": "EPSG", "code": 8807 } } ], "id": { "authority": "EPSG", "code": 19917 } }
Definition: Mapnik
<?xml version="1.0" encoding="utf-8"?> <Map srs="+proj=nzmg +lat_0=-41 +lon_0=173 +x_0=2510000 +y_0=6023150"> <Layer srs="+proj=nzmg +lat_0=-41 +lon_0=173 +x_0=2510000 +y_0=6023150"> </Layer> </Map>
Definition: SQL (PostGIS)
INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 19917, 'EPSG', 19917, '+proj=nzmg +lat_0=-41 +lon_0=173 +x_0=2510000 +y_0=6023150', 'PROJECTION["New_Zealand_Map_Grid"],PARAMETER["latitude_of_origin",-41],PARAMETER["central_meridian",173],PARAMETER["false_easting",2510000],PARAMETER["false_northing",6023150]');