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

Description

Calculate 2 point distances, in meter

License

Open Source License

Parameter

Parameter	Description
formLat	a parameter
fromLon	a parameter
toLat	a parameter
toLon	a parameter

Declaration

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

Method Source Code

//package com.java2s;
/**//www.  j a  v a2 s  . co  m
 * Project: MClubTracker
 * 
 * File Created at 2013-8-6
 * $id$
 * 
 * Copyright 2013, Shawn Chain (shawn.chain@gmail.com).
 * All rights reserved.
 *
 * 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 {
    /**
     * Helper that calculates distances between 2 points of WGS From article
     * "Calculate distance, bearing and more between Latitude/Longitude points"
     * http://www.movable-type.co.uk/scripts/latlong.html
     */
    private static final double earthRadius = 6378135;

    /**
     * Calculate 2 point distances, in meter
     * 
     * @param formLat
     * @param fromLon
     * @param toLat
     * @param toLon
     * @return
     */
    public static double distance(double lat1, double lon1, double lat2, double lon2) {
        double dLat = Math.toRadians(lat2 - lat1);
        double dLng = Math.toRadians(lon2 - lon1);
        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));
        double dist = earthRadius * c;

        return new Double(dist).doubleValue();
    }
}

Related

1. distAlongRaySquared(double px, double py, double qx, double qy, double rx, double ry)
2. distance(double lat1, double lng1, double lat2, double lng2)
3. distance(double lat1, double lng1, double lat2, double lng2)
4. distance(double lat1, double lon1, double lat2, double lon2)
5. distance(double lat1, double lon1, double lat2, double lon2)
6. distance(double lat1, double lon1, double lat2, double lon2)
7. distance(double latA, double logA, double latB, double logB)
8. distance(double latDegrees1, double lonDegrees1, double latDegrees2, double lonDegrees2)
9. distance(double latitude1, double longitude1, double latitude2, double longitude2)