Revision: 33850
at October 14, 2010 07:25 by rnickel

Initial Code
```public double calculateDistance(double lat1, double lon1, double lat2, double lon2)
{
try{
double R = 6371; // km

double dlat = Math.toRadians(lat2 - lat1);
double dlong = Math.toRadians(lon2 - lon1);

double a = Math.sin(dlat / 2.0) * Math.sin(dlat / 2.0) +
Math.sin(dlong / 2.0) * Math.sin(dlong / 2.0);
double num2 = Math.sqrt(a);
double num1 = Math.sqrt(1-a);
double c = 2 * MathUtilities.atan2(Math.sqrt(a), Math.sqrt(1-a));
double d = R * c;

return d;

} catch(Exception e){
e.printStackTrace();
}
return 0;
}```

Initial URL
`http://www.ryannickel.com/2010/10/how-to-calculate-the-distance-between-two-latlon-points-on-the-blackberry/`

Initial Description
```Yes, I realize that this won't work with j2me, but RIM has implemented some good helper classes to make this calculation much easier.

This calculation uses the Haversine formula.```

Initial Title
`How to calculate the distance between two lat/lon points on the blackberry`

Initial Tags

Initial Language
`Java`