EPSG:1461

Puerto Rico to NAD83 (1)

Attributes

Geodetic CRS: Puerto Rico

Datum: Puerto Rico

Ellipsoid: Clarke 1866

Prime meridian: Greenwich

Data source: EPSG

Information source: US Coast & Geodetic Survey www.ngs.noaa.gov

Revision date: 2004-04-27

Scope: Transformation of coordinates at 0.05m level of accuracy.

Remarks: Accuracy 0.05m at 67% confidence level. May be taken as approximate transformation Puerto Rico-WGS 84 - see code 15841.

Method: NADCON

Area of use: Puerto Rico, US Virgin Islands and British Virgin Islands - onshore.

Description: (0,)

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Puerto Rico, US Virgin Islands and British Virgin Islands - onshore.

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Definition: OGC Well Known Text 2 (2019)

COORDINATEOPERATION["Puerto Rico to NAD83 (1)",
    VERSION["NGS-PRVI"],
    SOURCECRS[
        GEOGCRS["Puerto Rico",
            DATUM["Puerto Rico",
                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",4139]]],
    TARGETCRS[
        GEOGCRS["NAD83",
            DATUM["North American Datum 1983",
                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",4269]]],
    METHOD["NADCON",
        ID["EPSG",9613]],
    PARAMETERFILE["Latitude difference file","prvi.las"],
    PARAMETERFILE["Longitude difference file","prvi.los"],
    OPERATIONACCURACY[0.05],
    USAGE[
        SCOPE["Transformation of coordinates at 0.05m level of accuracy."],
        AREA["Puerto Rico, US Virgin Islands and British Virgin Islands - onshore."],
        BBOX[17.62,-67.97,18.78,-64.25]],
    ID["EPSG",1461],
    REMARK["Accuracy 0.05m at 67% confidence level. May be taken as approximate transformation Puerto Rico-WGS 84 - see code 15841."]]

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_prvi.tif +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:1461","+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=hgridshift +grids=us_noaa_prvi.tif +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "Transformation",
    "name": "Puerto Rico to NAD83 (1)",
    "source_crs": {
        "type": "GeographicCRS",
        "name": "Puerto Rico",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "Puerto Rico",
            "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": 4139
        },
        "remarks": "NAD27 (CRS code 4267) used for military purposes. Note: this CRS includes longitudes which are POSITIVE EAST."
    },
    "target_crs": {
        "type": "GeographicCRS",
        "name": "NAD83",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "North American Datum 1983",
            "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": 4269
        },
        "remarks": "Longitude is POSITIVE EAST. The adjustment included connections to Greenland and Mexico but the system was not adopted there. For applications with an accuracy of better than 1m replaced by NAD83(HARN) in the US and PRVI and by NAD83(CSRS) in Canada."
    },
    "method": {
        "name": "NADCON",
        "id": {
            "authority": "EPSG",
            "code": 9613
        }
    },
    "parameters": [
        {
            "name": "Latitude difference file",
            "value": "prvi.las",
            "id": {
                "authority": "EPSG",
                "code": 8657
            }
        },
        {
            "name": "Longitude difference file",
            "value": "prvi.los",
            "id": {
                "authority": "EPSG",
                "code": 8658
            }
        }
    ],
    "accuracy": "0.05",
    "scope": "Transformation of coordinates at 0.05m level of accuracy.",
    "area": "Puerto Rico, US Virgin Islands and British Virgin Islands - onshore.",
    "bbox": {
        "south_latitude": 17.62,
        "west_longitude": -67.97,
        "north_latitude": 18.78,
        "east_longitude": -64.25
    },
    "id": {
        "authority": "EPSG",
        "code": 1461
    },
    "remarks": "Accuracy 0.05m at 67% confidence level. May be taken as approximate transformation Puerto Rico-WGS 84 - see code 15841."
}

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_prvi.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_prvi.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_prvi.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 ( 1461, 'EPSG', 1461, '+proj=pipeline +step +proj=axisswap +order=2,1 +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=hgridshift +grids=us_noaa_prvi.tif +step +proj=unitconvert +xy_in=rad +xy_out=deg +step +proj=axisswap +order=2,1', 'None');