A very simple module to compute all self-intersections in coordinates of a polygon. According to the Simple Features standard, polygons may not self-intersect. GeoJSON, however, doesn't care about ...
A Polygon's exterior ring must have counterclockwise winding order (often abbreviated ccw). This is often overlooked when manually creating Polygons or converting from other formats. As an older ...
The CBC covered the recent (as of the original post-time on this blog entry) Quebec elections and used a well-crafted hex grid map to display results: They have a ...
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