Java Distance Calculate distanceByLBS(double lo1, double la1, double lo2, double la2)

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Description

distance By LBS

License

Apache License

Declaration 

public static double distanceByLBS(double lo1, double la1, double lo2, double la2)

Method Source Code

//package com.java2s;
//License from project: Apache License 

public class Main {

    public static double distanceByLBS(double lo1, double la1, double lo2, double la2) {
        double radLat1 = la1 * Math.PI / 180;
        double radLat2 = la2 * Math.PI / 180;
        double a = radLat1 - radLat2;
        double b = lo1 * Math.PI / 180 - lo2 * Math.PI / 180;
        double 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 * 6378137.0;//  w  w  w.  ja  va2 s. c om
        s = Math.round(s * 10000) / 10000;
        return s;
    }
}

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