Skip to content

Instantly share code, notes, and snippets.

Embed
What would you like to do?
Java Implementation of Haversine Formula for distance calculation between two points
/**
* This is the implementation Haversine Distance Algorithm between two places
* @author ananth
* R = earth’s radius (mean radius = 6,371km)
Δlat = lat2− lat1
Δlong = long2− long1
a = sin²(Δlat/2) + cos(lat1).cos(lat2).sin²(Δlong/2)
c = 2.atan2(√a, √(1−a))
d = R.c
*
*/
public class HaversineDistance {
/**
* @param args
* arg 1- latitude 1
* arg 2 — latitude 2
* arg 3 — longitude 1
* arg 4 — longitude 2
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
final int R = 6371; // Radious of the earth
Double lat1 = Double.parseDouble(args[0]);
Double lon1 = Double.parseDouble(args[1]);
Double lat2 = Double.parseDouble(args[2]);
Double lon2 = Double.parseDouble(args[3]);
Double latDistance = toRad(lat2-lat1);
Double lonDistance = toRad(lon2-lon1);
Double a = Math.sin(latDistance / 2) * Math.sin(latDistance / 2) +
Math.cos(toRad(lat1)) * Math.cos(toRad(lat2)) *
Math.sin(lonDistance / 2) * Math.sin(lonDistance / 2);
Double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));
Double distance = R * c;
System.out.println(“The distance between two lat and long is::+ distance);
}
private static Double toRad(Double value) {
return value * Math.PI / 180;
}
}
@luminous9ja

This comment has been minimized.

Copy link

luminous9ja commented Apr 22, 2018

thank u

@matteobucci

This comment has been minimized.

Copy link

matteobucci commented May 12, 2019

Is this distance in kilometers?

@bergerbo

This comment has been minimized.

Copy link

bergerbo commented Sep 17, 2019

Is this distance in kilometers?

Yes, the unit is set by
final int R = 6371; // Radious of the earth
which expresses the radius in Km

@andreagiassi

This comment has been minimized.

Copy link

andreagiassi commented Jun 1, 2020

I suggest to set a more precise Earth's radius value:

public static final double R = 6371.0088; // Earth's radius Km

Fore more reference:
https://en.wikipedia.org/wiki/Earth_radius

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
You can’t perform that action at this time.