https://github.com/derhuerst/epsg-index

A machine-readable index of all EPSG coordinate systems.
https://github.com/derhuerst/epsg-index

coordinate-systems epsg list wgs-84 wgs84

Last synced: 5 days ago
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A machine-readable index of all EPSG coordinate systems.

• Host: GitHub
• URL: https://github.com/derhuerst/epsg-index
• Owner: derhuerst
• License: isc
• Created: 2017-08-29T13:01:11.000Z (about 7 years ago)
• Default Branch: master
• Last Pushed: 2023-11-07T20:11:00.000Z (about 1 year ago)
• Last Synced: 2024-10-03T23:54:57.356Z (about 1 month ago)
• Topics: coordinate-systems, epsg, list, wgs-84, wgs84
• Language: JavaScript
• Homepage: https://github.com/derhuerst/epsg-index
• Size: 57.6 KB
• Stars: 18
• Watchers: 3
• Forks: 4
• Open Issues: 2
• Metadata Files:
  • Readme: readme.md
  • License: license.md

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README

        
# epsg-index

**A machine-readable index of [all EPSG coordinate systems](https://epsg.io/?q=).** Similar to [`epsg`](https://github.com/stevage/epsg) and [`node-proj4js-defs`](https://github.com/yuletide/node-proj4js-defs), but kept up to date (so far). Like [`python-epsg`](https://github.com/geo-data/python-epsg#python-epsg), but in JavaScript/JSON.

[![npm version](https://img.shields.io/npm/v/epsg-index.svg)](https://www.npmjs.com/package/epsg-index)

![ISC-licensed](https://img.shields.io/github/license/derhuerst/epsg-index.svg)

![minimum Node.js version](https://img.shields.io/node/v/epsg-index.svg)

[![support me via GitHub Sponsors](https://img.shields.io/badge/support%20me-donate-fa7664.svg)](https://github.com/sponsors/derhuerst)

[![chat with me on Twitter](https://img.shields.io/badge/chat%20with%20me-on%20Twitter-1da1f2.svg)](https://twitter.com/derhuerst)

## Installing

```shell

npm install epsg-index

```

## Usage

```js

// use import assertions once they're supported by Node.js & ESLint

// https://github.com/tc39/proposal-import-assertions

import {createRequire} from 'module'

const require = createRequire(import.meta.url)

const epsg4326 = require('epsg-index/s/4326.json')

console.log(epsg4326)

```

```js

{

	code: '4326',

	kind: 'CRS-GEOGCRS',

	name: 'WGS 84',

	wkt: 'GEOGCS["WGS 84",DATUM["WGS_1984",SPHEROID["WGS 84",6378137,298.257223563,AUTHORITY["EPSG","7030"]],AUTHORITY["EPSG","6326"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4326"]]',

	proj4: '+proj=longlat +datum=WGS84 +no_defs',

	bbox: [90, -180, -90, 180],

	unit: 'degree (supplier to define representation)',

	area: 'World.',

	accuracy: null

}

```

You can also load all coordinate systems (`5mb` of data):

```js

const all = require('epsg-index/all.json')

console.log(all['4326'])

```

## Related

- [`transform-coordinates`](https://github.com/derhuerst/transform-coordinates) – Transform coordinates from one coordinate system to another. Built on top of `epsg-index`.

- [python-epsg](https://github.com/geo-data/python-epsg) – A Python API to the EPSG Geodetic Parameter Dataset.

## Contributing

If you have a question or have difficulties using `epsg-index`, please double-check your code and setup first. If you think you have found a bug or want to propose a feature, refer to [the issues page](https://github.com/derhuerst/epsg-index/issues).