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node-geocoder

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Node library for geocoding and reverse geocoding. Can be use as a nodejs library or as a command line

Installation and usage (geocoder command line)

npm install -g node-geocoder
geocoder --provider google 'Fornino, 187 Bedford Ave, Brooklyn, NY 11211'

Installation (nodejs library)

npm install node-geocoder

Usage example

var geocoderProvider = 'google';
var httpAdapter = 'http';
// optionnal
var extra = {
    apiKey: 'YOUR_API_KEY', // for mapquest, opencagedata, Google premier
    formatter: null         // 'gpx', 'string', ...
};

var geocoder = require('node-geocoder').getGeocoder(geocoderProvider, httpAdapter, extra);

// Using callback
geocoder.geocode('29 champs elysée paris', function(err, res) {
    console.log(res);
});

// Or using Promise
geocoder.geocode('29 champs elysée paris')
    .then(function(res) {
        console.log(res);
    })
    .catch(function(err) {
        console.log(err);
    });

// output :
[{
    latitude: 48.8698679,
    longitude: 2.3072976,
    country: 'France',
    countryCode: 'FR',
    city: 'Paris',
    zipcode: '75008',
    streetName: 'Champs-Élysées',
    streetNumber: '29',
    state: 'Île de France',
    stateCode: 'IDF'
}]

## Advenced usage (only google provider)
geocoder.geocode({address: '29 champs elysée', country: 'France', zipcode: '75008'}, function(err, res) {
    console.log(res);
});

// Reverse example

// Using callback
geocoder.reverse(45.767, 4.833, function(err, res) {
    console.log(res);
});

// Or using Promise
geocoder.reverse(45.767, 4.833)
    .then(function(res) {
        console.log(res);
    })
    .catch(function(err) {
        console.log(err);
    });

Geocoder Provider

  • google : GoogleGeocoder support address geocoding and reverse geocoding, use extra.clientIdand extra.apiKey(privateKey) for business licence, you can also use extra.language for specify language. Note that 'https' is required when using an apiKey
  • freegeoip : FreegeoipGeocoder support ip geocoding
  • datasciencetoolkit : DataScienceToolkitGeocoder supports ip v4 geocoding and address geocoding, use extra.host for specify a local instance
  • openstreetmap : OpenStreetMapGeocoder support address geocoding and reverse geocoding
  • mapquest : MapQuestGeocoder support address geocoding and reverse geocoding need an apiKey
  • openmapquest : Open MapQuestGeocoder (based on OpenStreetMapGeocoder) support address geocoding and reverse geocoding need an apiKey
  • agol : ArcGis Online Geocoding service, supports geocoding and reverse. Requires a client_id & client_secret
  • tomtom: TomTomGeocoder support address geocoding , you need to specify extra.apiKey
  • nominatimmapquest: OpenStreetMap nominatim geocoder, support address, and reverse geocoding
  • opencage: uses multiple open sources, support address, reverse geocoding, you need to specify extra.apiKey

Http adapter

  • http: This adapter uses Http nodejs library (by default)
  • https: This adapter uses Https nodejs library

Formatter

  • gpx : format result using GPX format
  • string : format result to an String array (you need to specify extra.formatterPattern key)
    • %P country
    • %p country code
    • %n street number
    • %S street name
    • %z zip code
    • %T State
    • %t state code

More

You can improve this project by adding new geocoders or http adapters.

To run tests just npm test

To check code style install jshint and just run jshint lib test

Extending node geocoder

You can add new geocoders by implementing the two method geocode & reverse:

var geocoder = {
    geocode: function(value, callback) { },
    reverse: function(lat, lng, callback) { }
}

You can also add formatter implementing this interface

var formatter = {
    format: function(data) { return formattedData; },
}

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