EPSG:7972 DEPRECATED

NGVD29 height (ftUS) to NGVD29 height (m)

Attributes

Data source: EPSG

Information source: IOGP

Revision date: 2017-10-16

Scope: Change of height or depth unit.

Remarks: Change of unit from US survey foot (ftUS) to metre. 1 ftUS = (12/39.37)m ≈ 0.304800609601219m.

Method: Change of Vertical Unit

Area of use: United States (USA) - CONUS onshore - Alabama; Arizona; Arkansas; California; Colorado; Connecticut; Delaware; Florida; Georgia; Idaho; Illinois; Indiana; Iowa; Kansas; Kentucky; Louisiana; Maine; Maryland; Massachusetts; Michigan; Minnesota; Mississippi; Missouri; Montana; Nebraska; Nevada; New Hampshire; New Jersey; New Mexico; New York; North Carolina; North Dakota; Ohio; Oklahoma; Oregon; Pennsylvania; Rhode Island; South Carolina; South Dakota; Tennessee; Texas; Utah; Vermont; Virginia; Washington; West Virginia; Wisconsin; Wyoming.

Description: (0,)

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United States (USA) - CONUS onshore - Alabama; Arizona; Arkansas; California; Colorado; Connecticut; Delaware; Florida; Georgia; Idaho; Illinois; Indiana; Iowa; Kansas; Kentucky; Louisiana; Maine; Maryland; Massachusetts; Michigan; Minnesota; Mississippi; Missouri; Montana; Nebraska; Nevada; New Hampshire; New Jersey; New Mexico; New York; North Carolina; North Dakota; Ohio; Oklahoma; Oregon; Pennsylvania; Rhode Island; South Carolina; South Dakota; Tennessee; Texas; Utah; Vermont; Virginia; Washington; West Virginia; Wisconsin; Wyoming.

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Definition: OGC Well Known Text

PROJECTION["Change_of_Vertical_Unit"],
PARAMETER["Unit conversion scalar",0.304800609601219]

Definition: OGC Well Known Text 2 (2019)

CONVERSION["NGVD29 height (ftUS) to NGVD29 height (m)",
    METHOD["Change of Vertical Unit",
        ID["EPSG",1069]],
    PARAMETER["Unit conversion scalar",0.304800609601219,
        SCALEUNIT["unity",1],
        ID["EPSG",1051]],
    ID["EPSG",7972]]

Definition: ESRI Well Known Text

PROJECTION["Change_of_Vertical_Unit"],
PARAMETER["Unit conversion scalar",0.304800609601219]

Definition: PROJ.4

+proj=unitconvert +z_in=us-ft +z_out=m

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:7972","+proj=unitconvert +z_in=us-ft +z_out=m");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "Conversion",
    "name": "NGVD29 height (ftUS) to NGVD29 height (m)",
    "method": {
        "name": "Change of Vertical Unit",
        "id": {
            "authority": "EPSG",
            "code": 1069
        }
    },
    "parameters": [
        {
            "name": "Unit conversion scalar",
            "value": 0.304800609601219,
            "unit": "unity",
            "id": {
                "authority": "EPSG",
                "code": 1051
            }
        }
    ],
    "id": {
        "authority": "EPSG",
        "code": 7972
    }
}

Definition: GeoServer

7972=PROJECTION["Change_of_Vertical_Unit"],PARAMETER["Unit conversion scalar",0.304800609601219]

Definition: MapServer - MAPfile

PROJECTION
	"proj=unitconvert"
	"z_in=us-ft"
	"z_out=m"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=unitconvert +z_in=us-ft +z_out=m">
	<Layer srs="+proj=unitconvert +z_in=us-ft +z_out=m">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 7972, 'EPSG', 7972, '+proj=unitconvert +z_in=us-ft +z_out=m', 'PROJECTION["Change_of_Vertical_Unit"],PARAMETER["Unit conversion scalar",0.304800609601219]');