Here is a writeup on Google's S2 library for considering addressing the surface of the Earth as 1D, using Hilbert Curves. http://blog.christianperone.com/2015/

Here is a writeup on Google's S2 library for considering addressing the surface of the Earth as 1D, using Hilbert Curves. http://blog.christianperone.com/2015/08/googles-s2-geometry-on-the-sphere-cells-and-hilbert-curve/?a=2 http://blog.christianperone.com/2015/08/googles-s2-geometry-... And 2015 HN thread: https://news.ycombinator.com/item?id=10066616 https://news.ycombinator.com/item?id=10066616