Apparently, this user prefers to keep an air of mystery about them.
6 How to calculate the intersection of 2 Circles? mar 10 '13
4 What kinds of line segments/edges require high accuracy in a true surface-of-the-ellipsoid representation? jul 11 '11
4 Calculate distortion outside a UTM zone sep 1 '12
4 Why is law of cosines more preferable than haversine when calculating distance between two latitude-longitude points? apr 22 '13