Created
January 12, 2023 01:29
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Calculate distance in KM between 2 points (coordinates)
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| function getDistanceFromLatLonInKm(lat1: number, lon1: number, lat2: number, lon2: number) { | |
| function deg2rad(deg: number) { | |
| return deg * (Math.PI / 180); | |
| } | |
| var R = 6371; // Radius of the earth in km | |
| var dLat = deg2rad(lat2 - lat1); // deg2rad below | |
| var dLon = deg2rad(lon2 - lon1); | |
| var a = | |
| Math.sin(dLat / 2) * Math.sin(dLat / 2) + | |
| Math.cos(deg2rad(lat1)) * Math.cos(deg2rad(lat2)) * Math.sin(dLon / 2) * Math.sin(dLon / 2); | |
| var c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a)); | |
| var d = R * c; // Distance in km | |
| return d; | |
| } |
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