2013-04-13: v0.1. Initial release. 2013-11-12: v0.2. Corrected error in starting subpath in IsoCell.firstSideCCW(). Thanks to Nicole Dröge whose careful testing ...

Last week we featured a tool for drawing contours which uses the Mapzen altitude API. We used a very simple algorithm called ‘Marching Squares’ that we found on Wikipedia. However, as GEB reader Боби ...