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