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prj2epsg

Node.js module for converting .prj files and projcs / geogcs strings to EPSG codes

  • Install
npm i prj2epsg
  • From .prj file
const prj2epsg = require('prj2epsg');
const fs = require('fs');

fs.readFile('./myproj.prj', (err, data) => {
    if(!err) prj2epsg.fromPRJ(data);
});
  • From GEOGCS / PROJCS string
const prj2epsg = require('prj2epsg');
let prj = 'GEOGCS[\"GCS_WGS_1984\",DATUM[\"WGS_1984\",SPHEROID[\"WGS_84\",6378137,298.257223563]],PRIMEM[\"Greenwich\",0],UNIT[\"Degree\",0.017453292519943295]]';

prj2epsg.fromPRJ(prj) // 4326
  • Methods
Method Arguments Description
get projection (String, File), type ('prj', 'epsg') returns full data object
fromPRJ projection (String, File) returns epsg code without prefix
fromEPSG projection (String, File) returns prj projcs / geogcs string