EPSG:1579

American Samoa 1962 to NAD83(HARN) (2)

Attributes

Geodetic CRS: American Samoa 1962

Datum: American Samoa 1962

Ellipsoid: Clarke 1866

Prime meridian: Greenwich

Data source: EPSG

Information source: ftp://ftp.ngs.noaa.gov/pub/pcsoft/nadcon/samoa_readme.txt

Revision date: 2004-04-27

Scope: Geodesy.

Remarks: NADCON method which expects longitudes positive west; EPSG GeogCRSs American Samoa 1962 and NAD83(HARN) (codes 4169 and 4152) have longitudes positive east. NADCON expects latitudes in northern hemisphere and values must be made positive prior to input.

Method: NADCON

Area of use: American Samoa - Ofu, Olesega and Ta'u islands.

Description: (0,)

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Definition: OGC Well Known Text 2 (2019)

COORDINATEOPERATION["American Samoa 1962 to NAD83(HARN) (2)",
    VERSION["NGS-Asm E"],
    SOURCECRS[
        GEOGCRS["American Samoa 1962",
            DATUM["American Samoa 1962",
                ELLIPSOID["Clarke 1866",6378206.4,294.978698213898,
                    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]],
            ID["EPSG",4169]]],
    TARGETCRS[
        GEOGCRS["NAD83(HARN)",
            DATUM["NAD83 (High Accuracy Reference Network)",
                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]],
            ID["EPSG",4152]]],
    METHOD["NADCON",
        ID["EPSG",9613]],
    PARAMETERFILE["Latitude difference file","eshpgn.las"],
    PARAMETERFILE["Longitude difference file","eshpgn.los"],
    OPERATIONACCURACY[5.0],
    USAGE[
        SCOPE["Geodesy."],
        AREA["American Samoa - Ofu, Olesega and Ta'u islands."],
        BBOX[-14.31,-169.73,-14.11,-169.38]],
    ID["EPSG",1579],
    REMARK["NADCON method which expects longitudes positive west; EPSG GeogCRSs American Samoa 1962 and NAD83(HARN) (codes 4169 and 4152) have longitudes positive east. NADCON expects latitudes in northern hemisphere and values must be made positive prior to input."]]

Definition: PROJ.4

+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=hgridshift +grids=us_noaa_eshpgn.tif +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1

Definition: JavaScript (Proj4js)

proj4.defs("EPSG:1579","+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=hgridshift +grids=us_noaa_eshpgn.tif +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.5/projjson.schema.json",
    "type": "Transformation",
    "name": "American Samoa 1962 to NAD83(HARN) (2)",
    "source_crs": {
        "type": "GeographicCRS",
        "name": "American Samoa 1962",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "American Samoa 1962",
            "ellipsoid": {
                "name": "Clarke 1866",
                "semi_major_axis": 6378206.4,
                "semi_minor_axis": 6356583.8
            }
        },
        "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": 4169
        }
    },
    "target_crs": {
        "type": "GeographicCRS",
        "name": "NAD83(HARN)",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "NAD83 (High Accuracy Reference Network)",
            "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": 4152
        }
    },
    "method": {
        "name": "NADCON",
        "id": {
            "authority": "EPSG",
            "code": 9613
        }
    },
    "parameters": [
        {
            "name": "Latitude difference file",
            "value": "eshpgn.las",
            "id": {
                "authority": "EPSG",
                "code": 8657
            }
        },
        {
            "name": "Longitude difference file",
            "value": "eshpgn.los",
            "id": {
                "authority": "EPSG",
                "code": 8658
            }
        }
    ],
    "accuracy": "5.0",
    "scope": "Geodesy.",
    "area": "American Samoa - Ofu, Olesega and Ta'u islands.",
    "bbox": {
        "south_latitude": -14.31,
        "west_longitude": -169.73,
        "north_latitude": -14.11,
        "east_longitude": -169.38
    },
    "id": {
        "authority": "EPSG",
        "code": 1579
    },
    "remarks": "NADCON method which expects longitudes positive west; EPSG GeogCRSs American Samoa 1962 and NAD83(HARN) (codes 4169 and 4152) have longitudes positive east. NADCON expects latitudes in northern hemisphere and values must be made positive prior to input."
}

Definition: MapServer - MAPfile

PROJECTION
	"proj=pipeline"
	"step"
	"proj=axisswap"
	"order=2,1"
	"step"
	"proj=unitconvert"
	"xy_in=deg"
	"xy_out=rad"
	"step"
	"proj=hgridshift"
	"grids=us_noaa_eshpgn.tif"
	"step"
	"proj=unitconvert"
	"xy_in=rad"
	"xy_out=deg"
	"step"
	"proj=axisswap"
	"order=2,1"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=hgridshift +grids=us_noaa_eshpgn.tif +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1">
	<Layer srs="+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=hgridshift +grids=us_noaa_eshpgn.tif +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1">
	</Layer>
</Map>

Definition: SQL (PostGIS)

INSERT into spatial_ref_sys (srid, auth_name, auth_srid, proj4text, srtext) values ( 1579, 'EPSG', 1579, '+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=hgridshift +grids=us_noaa_eshpgn.tif +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1', 'None');