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- function Rad(d){
- return d * Math.PI / 180.0;
- };
- function distance(lat1, lng1, lat2, lng2) {
- var radLat1 = Rad(lat1);
- var radLat2 = Rad(lat2);
- var a = radLat1 - radLat2;
- var b = Rad(lng1) - Rad(lng2);
- var s = 2 * Math.asin(Math.sqrt(Math.pow(Math.sin(a / 2), 2) +
- Math.cos(radLat1) * Math.cos(radLat2) * Math.pow(Math.sin(b / 2), 2)));
- s = s * 6378.137;
- s = Math.round(s * 10000) / 10;
- return s;
- }
- export default distance
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