Command line function for lat/lon of picture.

neg.js

//#!/usr/bin/node

// neg = node exif geolocation, latitude and longitude
// Add to your path, then use as: neg.js [path to image]
// chmod +x this file on download, move to a path folder
// or add to path manually

var im = require('imagemagick');

if (process.argv.length === 3) {
  im.readMetadata(process.argv[2], function (err, metadata) {
    if (err) throw err;
    if (metadata.exif) {
      if (metadata.exif.gpsLatitude && metadata.exif.gpsLongitude) {
        console.log('Raw Latitude:\t\t', metadata.exif.gpsLatitude);
        console.log('Raw Longitude:\t\t', metadata.exif.gpsLongitude);

        var splitLat = metadata.exif.gpsLatitude.split(', ');
        var splitLon = metadata.exif.gpsLongitude.split(', ');
        var decimalLat = parseInt(splitLat[0].split('/')[0]) +
          (parseInt(splitLat[1].split('/')[0]) / (60.0 * parseInt(splitLat[1].split('/')[1]))) +
          (parseInt(splitLat[2].split('/')[0]) / (3600.0 * parseInt(splitLat[2].split('/')[1])));
        var decimalLon = parseInt(splitLon[0].split('/')[0]) +
          (parseInt(splitLon[1].split('/')[0]) / (60.0 * parseInt(splitLon[1].split('/')[1]))) +
          (parseInt(splitLon[2].split('/')[0]) / (3600.0 * parseInt(splitLon[2].split('/')[1])));
        console.log('Decimal Latitude:\t', decimalLat);
        console.log('Decimal Longitude:\t', decimalLon);
      }
      else {
        console.log('No latitude and longitude available.');
      }
    }
    else {
      console.log('No exif data.');
    }
  });
}
else
  console.log('Usage: `neg [path to image]`');