Java Distance Calculate distance(double lon1, double lat1, double lon2, double lat2)

Description

distance

License

Open Source License

Declaration

public static double distance(double lon1, double lat1, double lon2, double lat2) 

Method Source Code

//package com.java2s;

public class Main {

    public static double distance(double lon1, double lat1, double lon2, double lat2) {

        double radLat1 = rad(lat1);
        double radLat2 = rad(lat2);

        double a = radLat1 - radLat2;
        double b = rad(lon1) - rad(lon2);

        double c = 2.0D * Math.asin(Math.sqrt(Math.pow(Math.sin(a / 2.0D), 2.0D)
                + Math.cos(radLat1) * Math.cos(radLat2) * Math.pow(Math.sin(b / 2.0D), 2.0D)));

        return c * 6371004.0D;
    }//from   w ww .j a v  a 2 s.c  o  m

    private static double rad(double d) {
        return d * 3.141592653589793D / 180.0D;
    }
}

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