BingMaps

Space Filling Curve Functions For TSQL

22 Nov 2020 By Simon Greener

Introduction Warning: This article is long mainly because it includes the source code of the Hilbert, Morton and Peano key/curves. I would assert that space filling curves have always been overlooked in their use within GIS. Their existence was/is rarely taught at Universities, though at least in my day. Perhaps today it is different (butRead More

STMorton: Creating a Morton Number Space Key Value for Grid Cells

27 Jul 2020 By Simon Greener

Introduction NOTE: This article is a copy of the original first written in 2010 from my old website. Space curves are imaginary lines that systematically cover all tiles in an indexed space. The most well known in GIS is the Morton key. The utility of such a number can be seen though its implementing aRead More