Definition An orthodromic or great-circle route on the Earth’s surface is the shortest possible real way (distance) between any two points. The Formula Ortho(A, B) = r x acos[[cos(LatA) x [...]

Definition The haversine formula is an equation important in navigation, giving great-circle distances between two points on a sphere from their longitudes and latitudes. The Formula a = [...]

One of the cool things about MySQL 5.7 is the fact that it supports a few spatial convenience functions (since 5.7.6), allowing one to do operations on geometric values. One of those convenience [...]