EPSG.io

https://epsg.io/docs
Admin
EPSG.io is a web service and interface to the EPSG database for discovering coordinate systems,...
Tokens:2,603
Snippets:35
Trust Score:9.8
Update:2 months ago
Show doc for...
Tokens:
Raw
### Coordinate Transformation Example

Source: https://epsg.io/docs

A concrete example of a coordinate transformation API call.

```text
https://api.maptiler.com/coordinates/transform/17,50.json?s_srs=4326&t_srs=5514&ops=1623
```

--------------------------------

### Install MapTiler Client JS

Source: https://epsg.io/docs

Command to install the MapTiler Client library via npm.

```bash
npm install --save @maptiler/client
```

--------------------------------

### Coordinate System Search Example

Source: https://epsg.io/docs

A concrete example of a coordinate system search API call.

```text
https://api.maptiler.com/coordinates/search/swiss deprecated=0.json?exports=true&limit=5
```

--------------------------------

### GET https://epsg.io/urn:ogc:def:{CODE}

Source: https://epsg.io/docs

Search by URN.

```APIDOC
## GET https://epsg.io/urn:ogc:def:{CODE}

### Description
Search by URN.

### Method
GET

### Endpoint
https://epsg.io/urn:ogc:def:{CODE}

### Parameters
#### Path Parameters
- **CODE** (string) - Required - The URN definition code.
```

--------------------------------

### Transform Coordinates with JS

Source: https://epsg.io/docs

Example of transforming coordinates using the MapTiler Client JS library.

```javascript
const resultA = await maptilerClient.coordinates.transform([1, 45], {targetCrs: 9793})
```

--------------------------------

### GET https://epsg.io/?q={QUERY}

Source: https://epsg.io/docs

Search interface for filtering coordinate systems using key-value pairs.

```APIDOC
## GET https://epsg.io/?q={QUERY}

### Description
Search interface using KEY:VALUE pairs for filtering results.

### Method
GET

### Endpoint
https://epsg.io/?q={QUERY}

### Parameters
#### Query Parameters
- **q** (string) - Required - The search query string using KEY:VALUE pairs.
```

--------------------------------

### GET https://epsg.io/{CODE}

Source: https://epsg.io/docs

Retrieve information for a specific coordinate reference system or transformation.

```APIDOC
## GET https://epsg.io/{CODE}

### Description
Retrieve details for a specific coordinate reference system or transformation.

### Method
GET

### Endpoint
https://epsg.io/{CODE}

### Parameters
#### Path Parameters
- **CODE** (string) - Required - The identifier for the CRS or transformation.
```

--------------------------------

### Search Coordinate Reference System with JS

Source: https://epsg.io/docs

Example of searching for a coordinate reference system using the MapTiler Client JS library.

```javascript
// in an async function, or as a 'thenable':
    const result = await maptilerClient.coordinates.search('mercator');
```

--------------------------------

### GET https://epsg.io/{EPSG}-{CODE}

Source: https://epsg.io/docs

Retrieve a CRS with a specific transformation applied.

```APIDOC
## GET https://epsg.io/{EPSG}-{CODE}

### Description
Retrieve a CRS with a specific transformation applied.

### Method
GET

### Endpoint
https://epsg.io/{EPSG}-{CODE}

### Parameters
#### Path Parameters
- **EPSG** (string) - Required - The EPSG identifier.
- **CODE** (string) - Required - The transformation code.
```

--------------------------------

### GET https://epsg.io/{VALUE}-crs-{CODE}

Source: https://epsg.io/docs

Search by OGC GML values.

```APIDOC
## GET https://epsg.io/{VALUE}-crs-{CODE}

### Description
Search by OGC GML values (OGP, IOGP, EPSG).

### Method
GET

### Endpoint
https://epsg.io/{VALUE}-crs-{CODE}

### Parameters
#### Path Parameters
- **VALUE** (string) - Required - The OGC GML value.
- **CODE** (string) - Required - The CRS code.
```

--------------------------------

### GET https://epsg.io/{EPSG}-{CODE}.{FORMAT}

Source: https://epsg.io/docs

Retrieve a CRS with a specific transformation in a requested format.

```APIDOC
## GET https://epsg.io/{EPSG}-{CODE}.{FORMAT}

### Description
Retrieve a CRS with a specific transformation in a requested format such as WKT or PROJ.4.

### Method
GET

### Endpoint
https://epsg.io/{EPSG}-{CODE}.{FORMAT}

### Parameters
#### Path Parameters
- **EPSG** (string) - Required - The EPSG identifier.
- **CODE** (string) - Required - The transformation code.
- **FORMAT** (string) - Required - The output format (e.g., wkt, proj4).
```

--------------------------------

### GET /coordinates/search/{QUERY}.json

Source: https://epsg.io/docs

Searches through coordinate systems and their components based on a query string.

```APIDOC
## GET /coordinates/search/{QUERY}.json

### Description
Searches through coordinate systems and their components based on a query string.

### Method
GET

### Endpoint
https://api.maptiler.com/coordinates/search/{QUERY}.json?key={KEY}&{PARAMS}

### Parameters
#### Path Parameters
- **QUERY** (string) - Required - The search query string.

#### Query Parameters
- **key** (string) - Required - Your MapTiler API key.
- **deprecated** (integer) - Optional - Filter by deprecated status.
- **exports** (boolean) - Optional - Include exports in the result.
- **limit** (integer) - Optional - Limit the number of results.
```

--------------------------------

### GET https://epsg.io/{CODE}-{OBJECT}

Source: https://epsg.io/docs

Retrieve other types of registered objects such as prime meridians, datums, or ellipsoids.

```APIDOC
## GET https://epsg.io/{CODE}-{OBJECT}

### Description
Retrieve other types of registered objects besides transformations or CRS, such as prime meridian, datum, or ellipsoid.

### Method
GET

### Endpoint
https://epsg.io/{CODE}-{OBJECT}

### Parameters
#### Path Parameters
- **CODE** (string) - Required - The object identifier.
- **OBJECT** (string) - Required - The type of object (e.g., ellipsoid).
```

--------------------------------

### GET /coordinates/transform/{COORDS}.json

Source: https://epsg.io/docs

Transforms coordinates from a source coordinate reference system to a target coordinate reference system.

```APIDOC
## GET /coordinates/transform/{COORDS}.json

### Description
Transforms coordinates from a source coordinate reference system to a target coordinate reference system.

### Method
GET

### Endpoint
https://api.maptiler.com/coordinates/transform/{COORDS}.json?s_srs={CODE}&t_srs={CODE}&key={KEY}

### Parameters
#### Path Parameters
- **COORDS** (string) - Required - The coordinates to transform (e.g., 17,50).

#### Query Parameters
- **s_srs** (string) - Required - The source coordinate reference system code.
- **t_srs** (string) - Required - The target coordinate reference system code.
- **key** (string) - Required - Your MapTiler API key.
- **ops** (string) - Optional - Specific transformation operations.
```

--------------------------------

### Coordinate Transformation URL Format

Source: https://epsg.io/docs

The universal URL structure for performing coordinate transformations.

```text
https://api.maptiler.com/coordinates/transform/{COORDS}.json?s_srs={CODE}&t_srs={CODE}
```

--------------------------------

### Coordinate System Search URL Format

Source: https://epsg.io/docs

The universal URL structure for searching coordinate systems.

```text
https://api.maptiler.com/coordinates/search/{QUERY}.json?PARAMS
```

--------------------------------

### Retrieve CRS or transformation

Source: https://epsg.io/docs

Access basic CRS or transformation data using the standard code.

```text
https://epsg.io/{CODE}
```

--------------------------------

### Retrieve CRS with transformation in specific format

Source: https://epsg.io/docs

Access CRS and transformation data in specific formats like WKT or PROJ.4.

```text
https://epsg.io/{EPSG}-{CODE}.{FORMAT}
```

--------------------------------

### PROJ definition for Pseudo Mercator (EPSG:3857)

Source: https://epsg.io/docs

A standard PROJ string representation for the Pseudo Mercator coordinate reference system.

```text
+proj=merc +a=6378137 +b=6378137 +lat_ts=0 +lon_0=0 +x_0=0 +y_0=0 +k=1 +units=m +nadgrids=@null +wktext +no_defs +type=crs
```

--------------------------------

### Retrieve CRS with transformation

Source: https://epsg.io/docs

Access a CRS combined with a specific transformation.

```text
https://epsg.io/{EPSG}-{CODE}
```

--------------------------------

### Search by OGC GML values

Source: https://epsg.io/docs

Search for coordinate systems using OGC GML identifiers.

```text
https://epsg.io/{VALUE}-crs-{CODE}
```

--------------------------------

### Search by URN

Source: https://epsg.io/docs

Search for coordinate systems using URN identifiers.

```text
https://epsg.io/urn:ogc:def:{CODE}
```

--------------------------------

### Search coordinate systems

Source: https://epsg.io/docs

Filter coordinate systems using key-value pairs.

```text
https://epsg.io/?q=KEY:VALUE[+KEY:VALUE[+…]]
```

--------------------------------

### Retrieve registered objects

Source: https://epsg.io/docs

Access specific registered objects such as prime meridians, datums, or ellipsoids.

```text
https://epsg.io/{CODE}-{OBJECT}
```

--------------------------------

### ESRI WKT definition for Pseudo Mercator

Source: https://epsg.io/docs

An ESRI Well-Known Text (WKT) definition for the Pseudo Mercator coordinate reference system.

```text
        PROJCS["WGS_1984_Web_Mercator_Auxiliary_Sphere",
          GEOGCS["GCS_WGS_1984",
              DATUM["D_WGS_1984",
                  SPHEROID["WGS_1984",6378137.0,298.257223563]],
              PRIMEM["Greenwich",0.0],
              UNIT["Degree",0.0174532925199433]],
          PROJECTION["Mercator_Auxiliary_Sphere"],
          PARAMETER["False_Easting",0.0],
          PARAMETER["False_Northing",0.0],
          PARAMETER["Central_Meridian",0.0],
          PARAMETER["Standard_Parallel_1",0.0],
          PARAMETER["Auxiliary_Sphere_Type",0.0],
          UNIT["Meter",1.0]]
```
Tokens:
Raw