Java Distance Calculate distanceKM(double lat1, double lng1, double lat2, double lng2)

Description

distance KM

License

Apache License

Declaration

public static double distanceKM(double lat1, double lng1, double lat2, double lng2) 

Method Source Code

//package com.java2s;
/*//from   w w w .j  ava  2 s .  c om
 * Copyright (C) 2014 Zach Melamed
 * 
 * Latest version available online at https://github.com/zach-m/tectonica-commons
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

public class Main {
    private static double EARTH_RADIUS = 6371;

    public static double distanceKM(double lat1, double lng1, double lat2, double lng2) {
        double dLat = Math.toRadians(lat2 - lat1);
        double dLng = Math.toRadians(lng2 - lng1);
        double a = Math.sin(dLat / 2) * Math.sin(dLat / 2) + Math.cos(Math.toRadians(lat1))
                * Math.cos(Math.toRadians(lat2)) * Math.sin(dLng / 2) * Math.sin(dLng / 2);
        double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
        return EARTH_RADIUS * c;
    }
}

Related

1. distanceInMeters(double lat1, double lon1, double lat2, double lon2)
2. distanceInMetersBetween(final double lat1, final double lng1, final double lat2, final double lng2)
3. distanceInMilesBetween(float lat1, float lng1, float lat2, float lng2)
4. distanceInMilesBetweenDouble(Float centerLat, Float centerLon, double lat, double lon)
5. distanceInRadians(double latitude1, double longitude1, double latitude2, double longitude2)
6. distanceLevenshtein(CharSequence s, CharSequence t)
7. distanceLongitude(double latitude, double east, double west)
8. distanceMat(double[][] m1, double[][] m2)
9. distanceMeter(double prevLat, double prevLon, double currentLat, double currentLon)