EPSG:6950

PSAD56 to SIRGAS-Chile 2002 (2)

Attributes

Geodetic CRS: PSAD56

Datum: Provisional South American Datum 1956

Ellipsoid: International 1924

Prime meridian: Greenwich

Data source: EPSG

Information source: Instituto Geografico Militar (IGM) presentation to 2005 SIRGAS meeting.

Revision date: 2020-07-24

Scope: Topographic mapping (medium and small scale).

Remarks: Also used as a transformation from PSAD56 to WGS 84 - see code 6972.

Method: Geocentric translations (geog2D domain)

Area of use: Chile - onshore between 26°S and 36°S.

Description: (0,)

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Definition: PROJ.4

+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=push +v_3 +step +proj=cart +ellps=intl +step +proj=helmert +x=-328 +y=340 +z=-329 +step +inv +proj=cart +ellps=GRS80 +step +proj=pop +v_3 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1

Definition: JavaScript (Proj4js)

proj4.defs("EPSG:6950","+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=push +v_3 +step +proj=cart +ellps=intl +step +proj=helmert +x=-328 +y=340 +z=-329 +step +inv +proj=cart +ellps=GRS80 +step +proj=pop +v_3 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.4/projjson.schema.json",
    "type": "Transformation",
    "name": "PSAD56 to SIRGAS-Chile 2002 (2)",
    "source_crs": {
        "type": "GeographicCRS",
        "name": "PSAD56",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "Provisional South American Datum 1956",
            "ellipsoid": {
                "name": "International 1924",
                "semi_major_axis": 6378388,
                "inverse_flattening": 297
            }
        },
        "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": 4248
        }
    },
    "target_crs": {
        "type": "GeographicCRS",
        "name": "SIRGAS-Chile 2002",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "SIRGAS-Chile realization 1 epoch 2002",
            "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": 5360
        }
    },
    "method": {
        "name": "Geocentric translations (geog2D domain)",
        "id": {
            "authority": "EPSG",
            "code": 9603
        }
    },
    "parameters": [
        {
            "name": "X-axis translation",
            "value": -328,
            "unit": "metre",
            "id": {
                "authority": "EPSG",
                "code": 8605
            }
        },
        {
            "name": "Y-axis translation",
            "value": 340,
            "unit": "metre",
            "id": {
                "authority": "EPSG",
                "code": 8606
            }
        },
        {
            "name": "Z-axis translation",
            "value": -329,
            "unit": "metre",
            "id": {
                "authority": "EPSG",
                "code": 8607
            }
        }
    ],
    "accuracy": "5.0",
    "scope": "Topographic mapping (medium and small scale).",
    "area": "Chile - onshore between 26°S and 36°S.",
    "bbox": {
        "south_latitude": -36,
        "west_longitude": -72.87,
        "north_latitude": -26,
        "east_longitude": -68.28
    },
    "id": {
        "authority": "EPSG",
        "code": 6950
    },
    "remarks": "Also used as a transformation from PSAD56 to WGS 84 - see code 6972."
}

Definition: MapServer - MAPfile

PROJECTION
	"proj=pipeline"
	"step"
	"proj=axisswap"
	"order=2,1"
	"step"
	"proj=unitconvert"
	"xy_in=deg"
	"xy_out=rad"
	"step"
	"proj=push"
	"v_3"
	"step"
	"proj=cart"
	"ellps=intl"
	"step"
	"proj=helmert"
	"x=-328"
	"y=340"
	"z=-329"
	"step"
	"inv"
	"proj=cart"
	"ellps=GRS80"
	"step"
	"proj=pop"
	"v_3"
	"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=push +v_3 +step +proj=cart +ellps=intl +step +proj=helmert +x=-328 +y=340 +z=-329 +step +inv +proj=cart +ellps=GRS80 +step +proj=pop +v_3 +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=push +v_3 +step +proj=cart +ellps=intl +step +proj=helmert +x=-328 +y=340 +z=-329 +step +inv +proj=cart +ellps=GRS80 +step +proj=pop +v_3 +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 ( 6950, 'EPSG', 6950, '+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=push +v_3 +step +proj=cart +ellps=intl +step +proj=helmert +x=-328 +y=340 +z=-329 +step +inv +proj=cart +ellps=GRS80 +step +proj=pop +v_3 +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1', 'None');

Definition: OGC WKT 2 (2019)

COORDINATEOPERATION["PSAD56 to SIRGAS-Chile 2002 (2)",VERSION["IGM-Chl B"],SOURCECRS[GEOGCRS["PSAD56",DATUM["Provisional South American Datum 1956",ELLIPSOID["International 1924",6378388,297,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",4248]]],TARGETCRS[GEOGCRS["SIRGAS-Chile 2002",DATUM["SIRGAS-Chile realization 1 epoch 2002",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",5360]]],METHOD["Geocentric translations (geog2D domain)",ID["EPSG",9603]],PARAMETER["X-axis translation",-328,LENGTHUNIT["metre",1],ID["EPSG",8605]],PARAMETER["Y-axis translation",340,LENGTHUNIT["metre",1],ID["EPSG",8606]],PARAMETER["Z-axis translation",-329,LENGTHUNIT["metre",1],ID["EPSG",8607]],OPERATIONACCURACY[5.0],USAGE[SCOPE["Topographic mapping (medium and small scale)."],AREA["Chile - onshore between 26°S and 36°S."],BBOX[-36,-72.87,-26,-68.28]],ID["EPSG",6950],REMARK["Also used as a transformation from PSAD56 to WGS 84 - see code 6972."]]