Java Distance Calculate calcDistanceBetweenCoords(double startLat, double startLon, double endLat, double endLon)

Description

Calculates the distance in meter between to coordinates.

License

Open Source License

Parameter

Parameter	Description
startNode	Node where the way begins.
endNode	Node where the way ends.

Return

Distance in meters.

Declaration

public static double calcDistanceBetweenCoords(double startLat, double startLon, double endLat, double endLon) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

public class Main {
    /**/*  ww  w.  ja v a2s.c o m*/
     * Calculates the distance in meter between to coordinates. The formula is
     * derived from "Seitencosinussatz".
     * 
     * @param startNode
     *            Node where the way begins.
     * @param endNode
     *            Node where the way ends.
     * @return Distance in meters.
     */
    public static double calcDistanceBetweenCoords(double startLat, double startLon, double endLat, double endLon) {

        if (startLat == endLat && startLon == endLon) {
            return 0;
        }

        return Math.acos(Math.sin(endLat / 180. * Math.PI) * Math.sin(startLat / 180. * Math.PI)
                + Math.cos(endLat / 180. * Math.PI) * Math.cos(startLat / 180. * Math.PI)
                        * Math.cos(endLon / 180. * Math.PI - startLon / 180. * Math.PI))
                * 6380. // ca.
                // der
                // Erdradius
                * 1000; // Umrechnung von km in m
    }
}

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