Node library for geocoding and reverse geocoding

node-geocoder

Node library for geocoding and reverse geocoding. Can be used as a nodejs library

Installation (nodejs library)

npm install node-geocoder

Usage example

const NodeGeocoder = require('node-geocoder');

const options = {
  provider: 'google',

  // Optional depending on the providers
  fetch: customFetchImplementation,
  apiKey: 'YOUR_API_KEY', // for Mapquest, OpenCage, Google Premier
  formatter: null // 'gpx', 'string', ...
};

const geocoder = NodeGeocoder(options);

// Using callback
const res = await geocoder.geocode('29 champs elysée paris');

// output :
[
  {
    latitude: 48.8698679,
    longitude: 2.3072976,
    country: 'France',
    countryCode: 'FR',
    city: 'Paris',
    zipcode: '75008',
    streetName: 'Champs-Élysées',
    streetNumber: '29',
    administrativeLevels: {
      level1long: 'Île-de-France',
      level1short: 'IDF',
      level2long: 'Paris',
      level2short: '75'
    },
    provider: 'google'
  }
];

Advanced usage (only google, here, mapquest, locationiq, and opencage providers)

const res = await geocoder.geocode({
  address: '29 champs elysée',
  country: 'France',
  zipcode: '75008'
});

// OpenCage advanced usage example
const res = await geocoder.geocode({
  address: '29 champs elysée',
  countryCode: 'fr',
  minConfidence: 0.5,
  limit: 5
});

// Reverse example

const res = await geocoder.reverse({ lat: 45.767, lon: 4.833 });

// Batch geocode

const results = await geocoder.batchGeocode([
  '13 rue sainte catherine',
  'another address'
]);

// Set specific http request headers:
const nodeFetch = require('node-fetch');

const geocoder = NodeGeocoder({
  provider: 'google',
  fetch: function fetch(url, options) {
    return nodeFetch(url, {
      ...options,
      headers: {
        'user-agent': 'My application <email@domain.com>',
        'X-Specific-Header': 'Specific value'
      }
    });
  }
});

Geocoder Providers (in alphabetical order)

agol : ArcGis Online Geocoding service. Supports geocoding and reverse. Requires a client_id & client_secret
datasciencetoolkit : DataScienceToolkitGeocoder. Supports IPv4 geocoding and address geocoding. Use options.host to specify a local instance
freegeoip : FreegeoipGeocoder. Supports IP geocoding
geocodio: Geocodio, Supports address geocoding and reverse geocoding (US only)
google : GoogleGeocoder. Supports address geocoding and reverse geocoding. Use options.clientIdand options.apiKey(privateKey) for business licence. You can also use options.language and options.region to specify language and region, respectively.
here : HereGeocoder. Supports address geocoding and reverse geocoding. You must specify options.apiKey with your Here API key. You can also use options.language, options.politicalView (read about political views here), options.country, and options.state.
locationiq : LocationIQGeocoder. Supports address geocoding and reverse geocoding just like openstreetmap but does require only a locationiq api key to be set.
- For geocode you can use simple q parameter or an object containing the different parameters defined here: http://locationiq.org/#docs
- For reverse, you can pass over {lat, lon} and additional parameters defined in http://locationiq.org/#docs
- No need to specify referer or email addresses, just locationiq api key, note that there are rate limits!
mapquest : MapQuestGeocoder. Supports address geocoding and reverse geocoding. Needs an apiKey
nominatimmapquest: Same geocoder as openstreetmap, but queries the MapQuest servers. You need to specify options.apiKey
opencage: OpenCage Geocoder. Aggregates many different open geocoder. Supports address and reverse geocoding with many optional parameters. You need to specify options.apiKey which can be obtained at OpenCage.
opendatafrance: OpendataFranceGeocoder supports forward and reverse geocoding in France; for more information, see OpendataFrance API documentation
openmapquest : Open MapQuestGeocoder (based on OpenStreetMapGeocoder). Supports address geocoding and reverse geocoding. Needs an apiKey
openstreetmap : OpenStreetMapGeocoder. Supports address geocoding and reverse geocoding. You can use options.language and options.email to specify a language and a contact email address.
- For geocode, you can use an object as value, specifying one or several parameters
- For reverse, you can use additional parameters
- You should specify a specific user-agent or referrer header field as required by the OpenStreetMap Usage Policy
- Set options.osmServer to use custom nominatim server. Example: you can setup local nominatim server by following these instructions and set options.osmServer: http://localhost:8000 to use local server.
nominatimmapquest: Same geocoder as openstreetmap, but queries the MapQuest servers. You need to specify options.apiKey
pickpoint: PickPoint Geocoder. Supports address geocoding and reverse geocoding. You need to specify options.apiKey obtained at PickPoint.
- As parameter for geocode function you can use a string representing an address like “13 rue sainte catherine” or an object with parameters described in Forward Geocoding Reference.
- For geocode function you should use an object where {lat, lon} are required parameters. Additional parameters like zoom are available, see details in Reverse Geocoding Reference.
smartyStreet: Smarty street geocoder (US only), you need to specify options.auth_id and options.auth_token
teleport: Teleport supports city and urban area forward and reverse geocoding; for more information, see Teleport API documentation
tomtom: TomTomGeocoder. Supports address geocoding. You need to specify options.apiKey and can use options.language to specify a language
virtualearth: VirtualEarthGeocoder (Bing maps). Supports address geocoding. You need to specify options.apiKey
yandex: Yandex support address geocoding, you can use options.language to specify language

Http adapter

Http adapter is deprecated, you can now use the fetch to provide your own fetch method compatible with the Fetch API https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API.

Fetch option

With the options.fetch you can provide your own method to fetch data. This method should be compatible with the Fetch API.

This allow you to specify a proxy to use, a custom timeout, specific headers, …

Formatter

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

Playground

You can try node-geocoder here http://node-geocoder.herokuapp.com/

Command line tools

node-geocoder-cli You can use node-geocoder-cli to geocode in shell

Extending node geocoder

You can add new geocoders by implementing the two methods geocode and reverse:

const geocoder = {
    geocode: function(value, callback) { ... },
    reverse: function(query, callback) { var lat = query.lat; var lon = query.lon; ... }
}

You can also add formatter implementing the following interface

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

Contributing

You can improve this project by adding new geocoders.

To run tests just npm test.

To check code style just run npm run lint.

Download Details:

Author: nchaulet

Demo: http://nchaulet.github.io/node-geocoder/

Source Code: https://github.com/nchaulet/node-geocoder

#nodejs #node #javascript #node-js

Node library for geocoding and reverse geocoding

node-geocoder

Node library for geocoding and reverse geocoding. Can be used as a nodejs library

Installation (nodejs library)

npm install node-geocoder

Usage example

const NodeGeocoder = require('node-geocoder');

const options = {
  provider: 'google',

  // Optional depending on the providers
  fetch: customFetchImplementation,
  apiKey: 'YOUR_API_KEY', // for Mapquest, OpenCage, Google Premier
  formatter: null // 'gpx', 'string', ...
};

const geocoder = NodeGeocoder(options);

// Using callback
const res = await geocoder.geocode('29 champs elysée paris');

// output :
[
  {
    latitude: 48.8698679,
    longitude: 2.3072976,
    country: 'France',
    countryCode: 'FR',
    city: 'Paris',
    zipcode: '75008',
    streetName: 'Champs-Élysées',
    streetNumber: '29',
    administrativeLevels: {
      level1long: 'Île-de-France',
      level1short: 'IDF',
      level2long: 'Paris',
      level2short: '75'
    },
    provider: 'google'
  }
];

Advanced usage (only google, here, mapquest, locationiq, and opencage providers)

const res = await geocoder.geocode({
  address: '29 champs elysée',
  country: 'France',
  zipcode: '75008'
});

// OpenCage advanced usage example
const res = await geocoder.geocode({
  address: '29 champs elysée',
  countryCode: 'fr',
  minConfidence: 0.5,
  limit: 5
});

// Reverse example

const res = await geocoder.reverse({ lat: 45.767, lon: 4.833 });

// Batch geocode

const results = await geocoder.batchGeocode([
  '13 rue sainte catherine',
  'another address'
]);

// Set specific http request headers:
const nodeFetch = require('node-fetch');

const geocoder = NodeGeocoder({
  provider: 'google',
  fetch: function fetch(url, options) {
    return nodeFetch(url, {
      ...options,
      headers: {
        'user-agent': 'My application <email@domain.com>',
        'X-Specific-Header': 'Specific value'
      }
    });
  }
});

Geocoder Providers (in alphabetical order)

agol : ArcGis Online Geocoding service. Supports geocoding and reverse. Requires a client_id & client_secret
datasciencetoolkit : DataScienceToolkitGeocoder. Supports IPv4 geocoding and address geocoding. Use options.host to specify a local instance
freegeoip : FreegeoipGeocoder. Supports IP geocoding
geocodio: Geocodio, Supports address geocoding and reverse geocoding (US only)
google : GoogleGeocoder. Supports address geocoding and reverse geocoding. Use options.clientIdand options.apiKey(privateKey) for business licence. You can also use options.language and options.region to specify language and region, respectively.
here : HereGeocoder. Supports address geocoding and reverse geocoding. You must specify options.apiKey with your Here API key. You can also use options.language, options.politicalView (read about political views here), options.country, and options.state.
locationiq : LocationIQGeocoder. Supports address geocoding and reverse geocoding just like openstreetmap but does require only a locationiq api key to be set.
- For geocode you can use simple q parameter or an object containing the different parameters defined here: http://locationiq.org/#docs
- For reverse, you can pass over {lat, lon} and additional parameters defined in http://locationiq.org/#docs
- No need to specify referer or email addresses, just locationiq api key, note that there are rate limits!
mapquest : MapQuestGeocoder. Supports address geocoding and reverse geocoding. Needs an apiKey
nominatimmapquest: Same geocoder as openstreetmap, but queries the MapQuest servers. You need to specify options.apiKey
opencage: OpenCage Geocoder. Aggregates many different open geocoder. Supports address and reverse geocoding with many optional parameters. You need to specify options.apiKey which can be obtained at OpenCage.
opendatafrance: OpendataFranceGeocoder supports forward and reverse geocoding in France; for more information, see OpendataFrance API documentation
openmapquest : Open MapQuestGeocoder (based on OpenStreetMapGeocoder). Supports address geocoding and reverse geocoding. Needs an apiKey
openstreetmap : OpenStreetMapGeocoder. Supports address geocoding and reverse geocoding. You can use options.language and options.email to specify a language and a contact email address.
- For geocode, you can use an object as value, specifying one or several parameters
- For reverse, you can use additional parameters
- You should specify a specific user-agent or referrer header field as required by the OpenStreetMap Usage Policy
- Set options.osmServer to use custom nominatim server. Example: you can setup local nominatim server by following these instructions and set options.osmServer: http://localhost:8000 to use local server.
nominatimmapquest: Same geocoder as openstreetmap, but queries the MapQuest servers. You need to specify options.apiKey
pickpoint: PickPoint Geocoder. Supports address geocoding and reverse geocoding. You need to specify options.apiKey obtained at PickPoint.
- As parameter for geocode function you can use a string representing an address like “13 rue sainte catherine” or an object with parameters described in Forward Geocoding Reference.
- For geocode function you should use an object where {lat, lon} are required parameters. Additional parameters like zoom are available, see details in Reverse Geocoding Reference.
smartyStreet: Smarty street geocoder (US only), you need to specify options.auth_id and options.auth_token
teleport: Teleport supports city and urban area forward and reverse geocoding; for more information, see Teleport API documentation
tomtom: TomTomGeocoder. Supports address geocoding. You need to specify options.apiKey and can use options.language to specify a language
virtualearth: VirtualEarthGeocoder (Bing maps). Supports address geocoding. You need to specify options.apiKey
yandex: Yandex support address geocoding, you can use options.language to specify language

Http adapter

Http adapter is deprecated, you can now use the fetch to provide your own fetch method compatible with the Fetch API https://developer.mozilla.org/en-US/docs/Web/API/Fetch_API.

Fetch option

With the options.fetch you can provide your own method to fetch data. This method should be compatible with the Fetch API.

This allow you to specify a proxy to use, a custom timeout, specific headers, …

Formatter

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

Playground

You can try node-geocoder here http://node-geocoder.herokuapp.com/

Command line tools

node-geocoder-cli You can use node-geocoder-cli to geocode in shell

Extending node geocoder

You can add new geocoders by implementing the two methods geocode and reverse:

const geocoder = {
    geocode: function(value, callback) { ... },
    reverse: function(query, callback) { var lat = query.lat; var lon = query.lon; ... }
}

You can also add formatter implementing the following interface

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

Contributing

You can improve this project by adding new geocoders.

To run tests just npm test.

To check code style just run npm run lint.

Download Details:

Author: nchaulet

Demo: http://nchaulet.github.io/node-geocoder/

Source Code: https://github.com/nchaulet/node-geocoder

#nodejs #node #javascript #node-js

WebClues Infotech

1616671994

Hire Dedicated Node.js Developers - Hire Node.js Developers

If you look at the backend technology used by today’s most popular apps there is one thing you would find common among them and that is the use of NodeJS Framework. Yes, the NodeJS framework is that effective and successful.

If you wish to have a strong backend for efficient app performance then have NodeJS at the backend.

WebClues Infotech offers different levels of experienced and expert professionals for your app development needs. So hire a dedicated NodeJS developer from WebClues Infotech with your experience requirement and expertise.

So what are you waiting for? Get your app developed with strong performance parameters from WebClues Infotech

For inquiry click here: https://www.webcluesinfotech.com/hire-nodejs-developer/

Book Free Interview: https://bit.ly/3dDShFg

#hire dedicated node.js developers #hire node.js developers #hire top dedicated node.js developers #hire node.js developers in usa & india #hire node js development company #hire the best node.js developers & programmers

Aria Barnes

1622719015

Why use Node.js for Web Development? Benefits and Examples of Apps

Front-end web development has been overwhelmed by JavaScript highlights for quite a long time. Google, Facebook, Wikipedia, and most of all online pages use JS for customer side activities. As of late, it additionally made a shift to cross-platform mobile development as a main technology in React Native, Nativescript, Apache Cordova, and other crossover devices.

Throughout the most recent couple of years, Node.js moved to backend development as well. Designers need to utilize a similar tech stack for the whole web project without learning another language for server-side development. Node.js is a device that adjusts JS usefulness and syntax to the backend.

What is Node.js?

Node.js isn’t a language, or library, or system. It’s a runtime situation: commonly JavaScript needs a program to work, however Node.js makes appropriate settings for JS to run outside of the program. It’s based on a JavaScript V8 motor that can run in Chrome, different programs, or independently.

The extent of V8 is to change JS program situated code into machine code — so JS turns into a broadly useful language and can be perceived by servers. This is one of the advantages of utilizing Node.js in web application development: it expands the usefulness of JavaScript, permitting designers to coordinate the language with APIs, different languages, and outside libraries.

What Are the Advantages of Node.js Web Application Development?

Of late, organizations have been effectively changing from their backend tech stacks to Node.js. LinkedIn picked Node.js over Ruby on Rails since it took care of expanding responsibility better and decreased the quantity of servers by multiple times. PayPal and Netflix did something comparative, just they had a goal to change their design to microservices. We should investigate the motivations to pick Node.JS for web application development and when we are planning to hire node js developers.

Amazing Tech Stack for Web Development

The principal thing that makes Node.js a go-to environment for web development is its JavaScript legacy. It’s the most well known language right now with a great many free devices and a functioning local area. Node.js, because of its association with JS, immediately rose in ubiquity — presently it has in excess of 368 million downloads and a great many free tools in the bundle module.

Alongside prevalence, Node.js additionally acquired the fundamental JS benefits:

quick execution and information preparing;
exceptionally reusable code;
the code is not difficult to learn, compose, read, and keep up;
tremendous asset library, a huge number of free aides, and a functioning local area.

In addition, it’s a piece of a well known MEAN tech stack (the blend of MongoDB, Express.js, Angular, and Node.js — four tools that handle all vital parts of web application development).

Designers Can Utilize JavaScript for the Whole Undertaking

This is perhaps the most clear advantage of Node.js web application development. JavaScript is an unquestionable requirement for web development. Regardless of whether you construct a multi-page or single-page application, you need to know JS well. On the off chance that you are now OK with JavaScript, learning Node.js won’t be an issue. Grammar, fundamental usefulness, primary standards — every one of these things are comparable.

In the event that you have JS designers in your group, it will be simpler for them to learn JS-based Node than a totally new dialect. What’s more, the front-end and back-end codebase will be basically the same, simple to peruse, and keep up — in light of the fact that they are both JS-based.

A Quick Environment for Microservice Development

There’s another motivation behind why Node.js got famous so rapidly. The environment suits well the idea of microservice development (spilling stone monument usefulness into handfuls or many more modest administrations).

Microservices need to speak with one another rapidly — and Node.js is probably the quickest device in information handling. Among the fundamental Node.js benefits for programming development are its non-obstructing algorithms.

Node.js measures a few demands all at once without trusting that the first will be concluded. Many microservices can send messages to one another, and they will be gotten and addressed all the while.

Versatile Web Application Development

Node.js was worked in view of adaptability — its name really says it. The environment permits numerous hubs to run all the while and speak with one another. Here’s the reason Node.js adaptability is better than other web backend development arrangements.

Node.js has a module that is liable for load adjusting for each running CPU center. This is one of numerous Node.js module benefits: you can run various hubs all at once, and the environment will naturally adjust the responsibility.

Node.js permits even apportioning: you can part your application into various situations. You show various forms of the application to different clients, in light of their age, interests, area, language, and so on. This builds personalization and diminishes responsibility. Hub accomplishes this with kid measures — tasks that rapidly speak with one another and share a similar root.

What’s more, Node’s non-hindering solicitation handling framework adds to fast, letting applications measure a great many solicitations.

Control Stream Highlights

Numerous designers consider nonconcurrent to be one of the two impediments and benefits of Node.js web application development. In Node, at whatever point the capacity is executed, the code consequently sends a callback. As the quantity of capacities develops, so does the number of callbacks — and you end up in a circumstance known as the callback damnation.

In any case, Node.js offers an exit plan. You can utilize systems that will plan capacities and sort through callbacks. Systems will associate comparable capacities consequently — so you can track down an essential component via search or in an envelope. At that point, there’s no compelling reason to look through callbacks.

Final Words

So, these are some of the top benefits of Nodejs in web application development. This is how Nodejs is contributing a lot to the field of web application development.

I hope now you are totally aware of the whole process of how Nodejs is really important for your web project. If you are looking to hire a node js development company in India then I would suggest that you take a little consultancy too whenever you call.

Good Luck!

Original Source

#node.js development company in india #node js development company #hire node js developers #hire node.js developers in india #node.js development services #node.js development

The NineHertz

1611828639

Node JS Development Company | Hire Node.js Developers

The NineHertz promises to develop a pro-active and easy solution for your enterprise. It has reached the heights in Node js web development and is considered as one of the top-notch Node js development company across the globe.

The NineHertz aims to design a best Node js development solution to improve their branding status and business profit.

Looking to hire the leading Node js development company?

#node js development company #nodejs development company #node.js development company #node.js development companies #node js web development #node development company

sophia tondon

1620990044

Top Node js Development Company India | Node js Web Development Services

Looking to hire top dedicated Node.js developers in India at affordable prices? Get dedicated Node.js developers with 6+ years of average experience on an hourly or full-time (dedicated monthly) basis to build dynamic, feature-rich, and secure software applications.

Our offshore Node JS developers create simple as well as complex enterprise-grade Node.js applications for small, mid-large scale businesses & can save your development cost up to 60%.

Planning to outsource Nodejs web development services? Or would you like to hire a team of Nodejs developers? Get in touch for a free consultation!

#hire node.js developers #hire node developers #node.js developers for hire #node js developers #node.js development company india

Node library for geocoding and reverse geocoding

node-geocoder

Installation (nodejs library)

Usage example

Advanced usage (only google, here, mapquest, locationiq, and opencage providers)

Geocoder Providers (in alphabetical order)

Http adapter

Fetch option

Formatter

More

Playground

Command line tools

Extending node geocoder

Contributing

Download Details:

What is GEEK

Buddha Community

Node library for geocoding and reverse geocoding

node-geocoder

Installation (nodejs library)

Usage example

Advanced usage (only google, here, mapquest, locationiq, and opencage providers)

Geocoder Providers (in alphabetical order)

Http adapter

Fetch option

Formatter

More

Playground

Command line tools

Extending node geocoder

Contributing

Download Details:

Hire Dedicated Node.js Developers - Hire Node.js Developers

Why use Node.js for Web Development? Benefits and Examples of Apps

What is Node.js?

What Are the Advantages of Node.js Web Application Development?

Amazing Tech Stack for Web Development

Designers Can Utilize JavaScript for the Whole Undertaking

A Quick Environment for Microservice Development

Versatile Web Application Development

Control Stream Highlights

Final Words

Node JS Development Company | Hire Node.js Developers

Top Node js Development Company India | Node js Web Development Services