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js haversine formula to calculate dist between two gps points

Zorglub answered on April 16, 2023 Popularity 1/10 Helpfulness 1/10

answer js haversine formula to calculate dist between two gps points

js haversine formula to calculate dist between two gps points

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const R = 6371e3; // metres
const φ1 = lat1 * Math.PI/180; // φ, λ in radians
const φ2 = lat2 * Math.PI/180;
const Δφ = (lat2-lat1) * Math.PI/180;
const Δλ = (lon2-lon1) * Math.PI/180;

const a = Math.sin(Δφ/2) * Math.sin(Δφ/2) +
          Math.cos(φ1) * Math.cos(φ2) *
          Math.sin(Δλ/2) * Math.sin(Δλ/2);
const c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));

const d = R * c; // in metres

Popularity 1/10 Helpfulness 1/10 Language javascript

Source: www.movable-type.co.uk

Tags: between formula gps haversine javascript points

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