Distance.js

A Small Utility to calulate distance from a latitude and longitude points.

Warning Javascript in general is not the greatest at math when dealing with large numbers... You have been warned

Distance().from([lat, lng]).to([lat, lng]).unit('miles')
// returns kilometers by default
var home = Distance().from([lat, lng]);
var nearby = [];
var locations = [/*...*/];
for(var i = 0; i < locations.length; i += 1){
  var location = locations[i];
  // use the same instance over and over
  if(home.to(location.center).unit('miles') < 3){
    nearby.push(location)
  }  
}

Available length units

• kilometers
• miles
• feet

Unit conversion is handled in the prototype of Number and is subject to change

more methods to be added

Development

All new features for distance.js must be accompanied by a test to prove feature works. Bug fixes do not need new test but it is recommended.

Install packages

Install Grunt

npm install

Grunt methods

grunt build
grunt test