My requirements are similar to this question, except the fact that I am prohibited to use the latitude and longitude values. I want to caluclate the \"walking\"
If you're interested, here's my java implementation of the haversine formula
/**
* Calculates the distance in km between two lat/long points
* using the haversine formula
*/
public static double haversine(
double lat1, double lng1, double lat2, double lng2) {
int r = 6371; // average radius of the earth in km
double dLat = Math.toRadians(lat2 - lat1);
double dLon = 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(dLon / 2) * Math.sin(dLon / 2);
double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
double d = r * c;
return d;
}
I hereby donate this to the public arena under GPL :)