EPSG:4149

CH1903

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Available transformations
to EPSG:4150
EPSG:4150 - CH1903+

  • Liechtenstein; Switzerland. , accuracy 0.2 m, code 15486 (default) [grid]

Selected transformation

Name: CH1903 to CH1903+ (1)

Method: NTv2

Grid Files: CHENyx06a.gsb

Remarks: For improved accuracy (0.01m) use CHENyx06 interpolation programme FINELTRA. File CHENyx06 replaced by CHENyx06a; there is a small area at the border of the data where some more real data has been introduced. swisstopo consider the change insignificant.

Information source: Bundesamt für Landestopografie swisstopo; www.swisstopo.ch

Revision date: 2015-12-30

Attributes

Unit: degree (supplier to define representation)

Geodetic CRS: CH1903

Datum: CH1903

Ellipsoid: Bessel 1841

Prime meridian: Greenwich

Data source: EPSG

Information source: Bundesamt für Landestopografie swisstopo; www.swisstopo.ch

Revision date: 2015-11-25

Scope: Geodesy.

Remarks: Replaced by CH1903+.

Area of use: Liechtenstein; Switzerland.

Coordinate system: Ellipsoidal 2D CS. Axes: latitude, longitude. Orientations: north, east. UoM: degree

Covered area powered by MapTiler MapTiler logo
SimpleMap

Center coordinates
8.23 46.82

WGS84 bounds:
5.96 45.82
10.49 47.81

Liechtenstein; Switzerland.
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Definition: OGC Well Known Text 2 (2019)

BOUNDCRS[
    SOURCECRS[
        GEOGCRS["CH1903",
            DATUM["CH1903",
                ELLIPSOID["Bessel 1841",6377397.155,299.1528128,
                    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]],
            USAGE[
                SCOPE["Geodesy."],
                AREA["Liechtenstein; Switzerland."],
                BBOX[45.82,5.96,47.81,10.49]],
            ID["EPSG",4149]]],
    TARGETCRS[
        GEOGCRS["CH1903+",
            DATUM["CH1903+",
                ELLIPSOID["Bessel 1841",6377397.155,299.1528128,
                    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]],
            USAGE[
                SCOPE["Geodesy."],
                AREA["Liechtenstein; Switzerland."],
                BBOX[45.82,5.96,47.81,10.49]],
            ID["EPSG",4150]]],
    ABRIDGEDTRANSFORMATION["CH1903 to CH1903+ (1)",
        METHOD["NTv2",
            ID["EPSG",9615]],
        PARAMETERFILE["Latitude and longitude difference file","CHENyx06a.gsb"],
        USAGE[
            SCOPE["Approximation using NTv2 method of results of FINELTRA programme to an accuracy of 0.01m except at boundary of the Geneva and Vaud cantons, in city of Geneva and in the main valleys of Valais canton where differences are up to 20 cm."],
            AREA["Liechtenstein; Switzerland."],
            BBOX[45.82,5.96,47.81,10.49]],
        ID["EPSG",15486],
        REMARK["For improved accuracy (0.01m) use CHENyx06 interpolation programme FINELTRA. File CHENyx06 replaced by CHENyx06a; there is a small area at the border of the data where some more real data has been introduced. swisstopo consider the change insignificant."]]]

Definition: PROJ.4

+proj=longlat +ellps=bessel +no_defs +type=crs

Definition: JavaScript (Proj4js) 

proj4.defs("EPSG:4149","+proj=longlat +ellps=bessel +no_defs +type=crs");

Definition: JSON

{
    "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json",
    "type": "BoundCRS",
    "source_crs": {
        "type": "GeographicCRS",
        "name": "CH1903",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "CH1903",
            "ellipsoid": {
                "name": "Bessel 1841",
                "semi_major_axis": 6377397.155,
                "inverse_flattening": 299.1528128
            }
        },
        "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": 4149
        }
    },
    "target_crs": {
        "type": "GeographicCRS",
        "name": "CH1903+",
        "datum": {
            "type": "GeodeticReferenceFrame",
            "name": "CH1903+",
            "ellipsoid": {
                "name": "Bessel 1841",
                "semi_major_axis": 6377397.155,
                "inverse_flattening": 299.1528128
            }
        },
        "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": 4150
        }
    },
    "transformation": {
        "name": "CH1903 to CH1903+ (1)",
        "method": {
            "name": "NTv2",
            "id": {
                "authority": "EPSG",
                "code": 9615
            }
        },
        "parameters": [
            {
                "name": "Latitude and longitude difference file",
                "value": "CHENyx06a.gsb",
                "id": {
                    "authority": "EPSG",
                    "code": 8656
                }
            }
        ],
        "id": {
            "authority": "EPSG",
            "code": 15486
        }
    }
}

Definition: MapServer - MAPfile

PROJECTION
	"proj=longlat"
	"ellps=bessel"
	"no_defs"
	"type=crs"
END

Definition: Mapnik

<?xml version="1.0" encoding="utf-8"?>
<Map srs="+proj=longlat +ellps=bessel +no_defs +type=crs">
	<Layer srs="+proj=longlat +ellps=bessel +no_defs +type=crs">
	</Layer>
</Map>