## Calculate Distance between two lat/long points with java

1
I'd like to calculate the distance between two locations based on their latitude and longitude (which I can retrieve via the google maps widget). I also have the calculation (and possible java code) to calculate this, however as I am new to Java (and quite new to mendix aswell) I'm not sure how to actually start using this in my application. I found the following formula: function getDistanceFromLatLonInKm(lat1,lon1,lat2,lon2) { var R = 6371; // Radius of the earth in km var dLat = deg2rad(lat2-lat1); // deg2rad below var dLon = deg2rad(lon2-lon1); var a = Math.sin(dLat/2) * Math.sin(dLat/2) + Math.cos(deg2rad(lat1)) * Math.cos(deg2rad(lat2)) * Math.sin(dLon/2) * Math.sin(dLon/2) ; var c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a)); var d = R * c; // Distance in km return d; } function deg2rad(deg) { return deg * (Math.PI/180) } How would I got about using this so I can actually start using it to calculate the distances.
7

I've converted the code you posted to Java and created a Java action in Mendix (5.8.1) for you here. You can go into your project and right-click the module you want to place it in, then select "import document package" and select this file. After that simply use the Java action it in a microflow with the right input. If the Java code is correct you should get the right result in kilometers.