Created
October 19, 2014 08:51
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| def haversine(lat1, long1, lat2, long2) | |
| dtor = Math::PI/180 | |
| r = 6378.14*1000 | |
| rlat1 = lat1 * dtor | |
| rlong1 = long1 * dtor | |
| rlat2 = lat2 * dtor | |
| rlong2 = long2 * dtor | |
| dlon = rlong1 - rlong2 | |
| dlat = rlat1 - rlat2 | |
| a = power(Math::sin(dlat/2), 2) + Math::cos(rlat1) * Math::cos(rlat2) * power(Math::sin(dlon/2), 2) | |
| c = 2 * Math::atan2(Math::sqrt(a), Math::sqrt(1-a)) | |
| d = r * c | |
| return d | |
| end |
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This will calculate in meters. For miles, change line 3 to "r = 3959".