3 ms·
Apparently, they didn't plot it on the map but on a grid. The density of data gives the well defined contour; a clever hack!
by myth_buster 11y ago
Apparently, they didn't plot it on the map but on a grid. The density of data gives the well defined contour; a clever hack!
- aw3c2 11y agoIt would look 99% the same if you just plotted the coordinates with some (smartly chosen) transparency