A simple haversine module
npm install haversine$ npm install haversineconst haversine = require('haversine')
const start = {
latitude: 30.849635,
longitude: -83.24559
}
const end = {
latitude: 27.950575,
longitude: -82.457178
}
console.log(haversine(start, end))
console.log(haversine(start, end, {unit: 'mile'}))
console.log(haversine(start, end, {unit: 'meter'}))
console.log(haversine(start, end, {threshold: 1}))
console.log(haversine(start, end, {threshold: 1, unit: 'mile'}))
console.log(haversine(start, end, {threshold: 1, unit: 'meter'}))
#### api
- options.unit - Unit of measurement applied to result (default km, available km, mile, meter, nmi)
- options.threshold - If passed, will result in library returning boolean value of whether or not the start and end points are within that supplied threshold. (default null)
- options.format - The format of start and end coordinate arguments. See table below for available values. (default null)
| Format | Example
| ------------- |--------------------------|
| undefined (default) | { latitude: 30.849635, longitude: -83.24559] }
| [lat,lon] | [30.849635, -83.24559]
| [lon,lat] | [-83.24559, 30.849635]
| {lat,lon} | { lat: 30.849635, lon: -83.24559] }
| geojson | { type: 'Feature', geometry: { coordinates: [-83.24559, 30.849635] } }