EPSG:7860

NZVD2016 height to Auckland 1946 height (1)

Attributes

Geodetic CRS: NZVD2016 height

Datum: New Zealand Vertical Datum 2016

Data source: EPSG

Information source: Land Information New Zealand (LINZ) standard S25009 and LINZ web site http://www.linz.govt.nz/

Revision date: 2020-03-14

Scope: Change of height to a different vertical reference surface.

Remarks: Derived at 260 control points. Mean offset 0.292m, standard deviation 0.029m, maximum difference from mean 0.075m.

Method: Vertical Offset by Grid Interpolation (NZLVD)

Area of use: New Zealand - North Island - Auckland vertical CRS area.

Description: (0,)

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Definition: PROJ.4

+proj=vgridshift +grids=nz_linz_auckht1946-nzvd2016.tif +multiplier=1

Definition: JavaScript (Proj4js)

proj4.defs("EPSG:7860","+proj=vgridshift +grids=nz_linz_auckht1946-nzvd2016.tif +multiplier=1");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.4/projjson.schema.json",
    "type": "Transformation",
    "name": "NZVD2016 height to Auckland 1946 height (1)",
    "source_crs": {
        "type": "VerticalCRS",
        "name": "NZVD2016 height",
        "datum": {
            "type": "VerticalReferenceFrame",
            "name": "New Zealand Vertical Datum 2016"
        },
        "coordinate_system": {
            "subtype": "vertical",
            "axis": [
                {
                    "name": "Gravity-related height",
                    "abbreviation": "H",
                    "direction": "up",
                    "unit": "metre"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 7839
        }
    },
    "target_crs": {
        "type": "VerticalCRS",
        "name": "Auckland 1946 height",
        "datum": {
            "type": "VerticalReferenceFrame",
            "name": "Auckland 1946"
        },
        "coordinate_system": {
            "subtype": "vertical",
            "axis": [
                {
                    "name": "Gravity-related height",
                    "abbreviation": "H",
                    "direction": "up",
                    "unit": "metre"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 5759
        }
    },
    "interpolation_crs": {
        "type": "GeographicCRS",
        "name": "NZGD2000",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "New Zealand Geodetic Datum 2000",
            "ellipsoid": {
                "name": "GRS 1980",
                "semi_major_axis": 6378137,
                "inverse_flattening": 298.257222101
            }
        },
        "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": 4167
        }
    },
    "method": {
        "name": "Vertical Offset by Grid Interpolation (NZLVD)",
        "id": {
            "authority": "EPSG",
            "code": 1071
        }
    },
    "parameters": [
        {
            "name": "Vertical offset file",
            "value": "auckland-1946-to-nzvd2016-conversion.csv",
            "id": {
                "authority": "EPSG",
                "code": 8732
            }
        }
    ],
    "accuracy": "0.02",
    "scope": "Change of height to a different vertical reference surface.",
    "area": "New Zealand - North Island - Auckland vertical CRS area.",
    "bbox": {
        "south_latitude": -37.67,
        "west_longitude": 174,
        "north_latitude": -36.12,
        "east_longitude": 176.17
    },
    "id": {
        "authority": "EPSG",
        "code": 7860
    },
    "remarks": "Derived at 260 control points. Mean offset 0.292m, standard deviation 0.029m, maximum difference from mean 0.075m."
}

Definition: MapServer - MAPfile

PROJECTION
	"proj=vgridshift"
	"grids=nz_linz_auckht1946-nzvd2016.tif"
	"multiplier=1"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=vgridshift +grids=nz_linz_auckht1946-nzvd2016.tif +multiplier=1">
	<Layer srs="+proj=vgridshift +grids=nz_linz_auckht1946-nzvd2016.tif +multiplier=1">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 7860, 'EPSG', 7860, '+proj=vgridshift +grids=nz_linz_auckht1946-nzvd2016.tif +multiplier=1', 'None');

Definition: OGC WKT 2 (2019)

COORDINATEOPERATION["NZVD2016 height to Auckland 1946 height (1)",VERSION["LINZ-NZ AUCK"],SOURCECRS[VERTCRS["NZVD2016 height",VDATUM["New Zealand Vertical Datum 2016"],CS[vertical,1],AXIS["gravity-related height (H)",up,LENGTHUNIT["metre",1]],ID["EPSG",7839]]],TARGETCRS[VERTCRS["Auckland 1946 height",VDATUM["Auckland 1946"],CS[vertical,1],AXIS["gravity-related height (H)",up,LENGTHUNIT["metre",1]],ID["EPSG",5759]]],METHOD["Vertical Offset by Grid Interpolation (NZLVD)",ID["EPSG",1071]],PARAMETERFILE["Vertical offset file","auckland-1946-to-nzvd2016-conversion.csv"],INTERPOLATIONCRS[GEOGCRS["NZGD2000",DATUM["New Zealand Geodetic Datum 2000",ELLIPSOID["GRS 1980",6378137,298.257222101,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]]]],OPERATIONACCURACY[0.02],USAGE[SCOPE["Change of height to a different vertical reference surface."],AREA["New Zealand - North Island - Auckland vertical CRS area."],BBOX[-37.67,174,-36.12,176.17]],ID["EPSG",7860],REMARK["Derived at 260 control points. Mean offset 0.292m, standard deviation 0.029m, maximum difference from mean 0.075m."]]