EPSG:9446 DEPRECATED

ODN height to EVRF2019 mean-tide height (1)

Attributes

Geodetic CRS: ODN height

Datum: Ordnance Datum Newlyn

Data source: EPSG

Information source: EuroGeographics http://crs.bkg.bund.de/crs-eu/ via Ordnance Survey Great Britain.

Revision date: 2020-07-21

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

Remarks: Determined at Channel Tunnel portal.

Method: Vertical Offset

Area of use: United Kingdom (UK) - Great Britain onshore - England and Wales - mainland; Scotland - mainland and Inner Hebrides.

Description: (0,)

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United Kingdom (UK) - Great Britain onshore - England and Wales - mainland; Scotland - mainland and Inner Hebrides.

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Definition: OGC Well Known Text 2 (2019)

COORDINATEOPERATION["ODN height to EVRF2019 mean-tide height (1)",
    VERSION["EuG-Gbr 2019m"],
    SOURCECRS[
        VERTCRS["ODN height",
            VDATUM["Ordnance Datum Newlyn"],
            CS[vertical,1],
                AXIS["gravity-related height (H)",up,
                    LENGTHUNIT["metre",1]],
            ID["EPSG",5701]]],
    TARGETCRS[
        VERTCRS["EVRF2019 mean-tide height",
            VDATUM["European Vertical Reference Frame 2019 mean tide"],
            CS[vertical,1],
                AXIS["gravity-related height (H)",up,
                    LENGTHUNIT["metre",1]],
            ID["EPSG",9390]]],
    METHOD["Vertical Offset",
        ID["EPSG",9616]],
    PARAMETER["Vertical Offset",-0.173,
        LENGTHUNIT["metre",1],
        ID["EPSG",8603]],
    OPERATIONACCURACY[0.02],
    USAGE[
        SCOPE["Change of height to a different vertical reference surface."],
        AREA["United Kingdom (UK) - Great Britain onshore - England and Wales - mainland; Scotland - mainland and Inner Hebrides."],
        BBOX[49.93,-7.06,58.71,1.8]],
    ID["EPSG",9446],
    REMARK["Determined at Channel Tunnel portal."]]

Definition: PROJ.4

+proj=geogoffset +dh=-0.173

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:9446","+proj=geogoffset +dh=-0.173");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "Transformation",
    "name": "ODN height to EVRF2019 mean-tide height (1)",
    "source_crs": {
        "type": "VerticalCRS",
        "name": "ODN height",
        "datum": {
            "type": "VerticalReferenceFrame",
            "name": "Ordnance Datum Newlyn"
        },
        "coordinate_system": {
            "subtype": "vertical",
            "axis": [
                {
                    "name": "Gravity-related height",
                    "abbreviation": "H",
                    "direction": "up",
                    "unit": "metre"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 5701
        }
    },
    "target_crs": {
        "type": "VerticalCRS",
        "name": "EVRF2019 mean-tide height",
        "datum": {
            "type": "VerticalReferenceFrame",
            "name": "European Vertical Reference Frame 2019 mean tide"
        },
        "coordinate_system": {
            "subtype": "vertical",
            "axis": [
                {
                    "name": "Gravity-related height",
                    "abbreviation": "H",
                    "direction": "up",
                    "unit": "metre"
                }
            ]
        },
        "id": {
            "authority": "EPSG",
            "code": 9390
        }
    },
    "method": {
        "name": "Vertical Offset",
        "id": {
            "authority": "EPSG",
            "code": 9616
        }
    },
    "parameters": [
        {
            "name": "Vertical Offset",
            "value": -0.173,
            "unit": "metre",
            "id": {
                "authority": "EPSG",
                "code": 8603
            }
        }
    ],
    "accuracy": "0.02",
    "scope": "Change of height to a different vertical reference surface.",
    "area": "United Kingdom (UK) - Great Britain onshore - England and Wales - mainland; Scotland - mainland and Inner Hebrides.",
    "bbox": {
        "south_latitude": 49.93,
        "west_longitude": -7.06,
        "north_latitude": 58.71,
        "east_longitude": 1.8
    },
    "id": {
        "authority": "EPSG",
        "code": 9446
    },
    "remarks": "Determined at Channel Tunnel portal."
}

Definition: MapServer - MAPfile

PROJECTION
	"proj=geogoffset"
	"dh=-0.173"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=geogoffset +dh=-0.173">
	<Layer srs="+proj=geogoffset +dh=-0.173">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 9446, 'EPSG', 9446, '+proj=geogoffset +dh=-0.173', 'None');