EPSG:7976 — HKPD depth

Vertical · Hong Kong - onshore

Export Formats

OGC WKT

VERT_CS[
    "HKPD depth",
    VERT_DATUM["Hong Kong Principal Datum",2005,AUTHORITY["EPSG","5135"]],
    UNIT["metre",1,AUTHORITY["EPSG","9001"]],
    AXIS["Depth",DOWN],
    AUTHORITY["EPSG","7976"]
]

WKT2

VERTCRS[
    "HKPD depth",
    BASEVERTCRS[
        "HKPD height",
        VDATUM["Hong Kong Principal Datum",ID["EPSG",5135]],
        ID["EPSG",5738]
    ],
    DERIVINGCONVERSION[
        "Height <> Depth Conversion",
        METHOD["Height Depth Reversal",ID["EPSG",1068]],
        ID["EPSG",7812]
    ],
    CS[vertical,1,ID["EPSG",6498]],
    AXIS["Depth (D)",down],
    LENGTHUNIT["metre",1,ID["EPSG",9001]],
    ID["EPSG",7976]
]

PROJ.4

+vunits=m +no_defs +type=crs

Proj4js

How to add a projection to Proj4js? →

proj4.defs("EPSG:7976", "+vunits=m +no_defs +type=crs");

JSON

{
  "type": "CoordinateReferenceSystem",
  "code": 7976,
  "name": "HKPD depth",
  "kind": "vertical",
  "area": "Hong Kong - onshore",
  "unit": "metre",
  "bbox": [
    22.19,
    113.82,
    22.56,
    114.39
  ],
  "proj4": "+vunits=m +no_defs +type=crs"
}

PostGIS

How to add a projection to PostGIS? →

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (7976, 'EPSG', 7976, '+vunits=m +no_defs +type=crs', 'VERT_CS["HKPD depth",VERT_DATUM["Hong Kong Principal Datum",2005,AUTHORITY["EPSG","5135"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Depth",DOWN],AUTHORITY["EPSG","7976"]]');

MapServer

How to add a projection to MapServer? →

PROJECTION
  "+vunits=m"
  "+no_defs"
  "+type=crs"
END

GeoServer

How to add a projection to GeoServer? →

7976=VERT_CS["HKPD depth",VERT_DATUM["Hong Kong Principal Datum",2005,AUTHORITY["EPSG","5135"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Depth",DOWN],AUTHORITY["EPSG","7976"]]

Related Coordinate Systems

Available Transformations (1)

Transformation	Source → Target	Accuracy (m)
HKPD depth to HKCD depth (1)	7976 → 5739	0

Other CRS using Hong Kong Principal Datum

Frequently Asked Questions

How do I add EPSG:7976 to GeoServer?

Add the following definition to your GeoServer configuration:

7976=VERT_CS["HKPD depth",VERT_DATUM["Hong Kong Principal Datum",2005,AUTHORITY["EPSG","5135"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Depth",DOWN],AUTHORITY["EPSG","7976"]]

Read the full GeoServer guide →

How do I add EPSG:7976 to PostGIS?

Add the following definition to your PostGIS configuration:

INSERT INTO spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext)
VALUES (7976, 'EPSG', 7976, '+vunits=m +no_defs +type=crs', 'VERT_CS["HKPD depth",VERT_DATUM["Hong Kong Principal Datum",2005,AUTHORITY["EPSG","5135"]],UNIT["metre",1,AUTHORITY["EPSG","9001"]],AXIS["Depth",DOWN],AUTHORITY["EPSG","7976"]]');

Read the full PostGIS guide →

How do I add EPSG:7976 to MapServer?

Add the following definition to your MapServer configuration:

PROJECTION
  "+vunits=m"
  "+no_defs"
  "+type=crs"
END

Read the full MapServer guide →

How do I use EPSG:7976 with Proj4js?

Add the following definition to your Proj4js configuration:

proj4.defs("EPSG:7976", "+vunits=m +no_defs +type=crs");

Read the full Proj4js guide →