ptolemy

A simple way to retrieve geographic projection information, in a variety of formats, from an EPSG SRID. Uses the epsg.io website.

The following formats for projections are supported:

• proj4
• wkt
• prettywkt (human-readable)
• esriwkt
• gml
• mapnik
• proj4js (returns js code - always be careful when using eval)

Install

$ npm install ptolemy

Usage

var ptolemy = require('ptolemy');
 
ptolemy.get('4326', 'ogcwkt', function (err, resp) {
  console.log(resp);
});
 
// Result
'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",0.01745329251994328,AUTHORITY["EPSG","9122"]],AUTHORITY["EPSG","4326"]]'

Credits

http://epsg.io/

Copyright

(c) 2015 Ben Lyaunzon Licensed under the MIT license.