contours - Create contours using NASA's DEM data

Mode	Name	Size
-rw-r--r--	README.md	483	log plain blame
-rw-r--r--	contour-line-example.png	6458224	log plain blame
-rw-r--r--	contour.py	1145	log plain blame
-rw-r--r--	contour.sh	2613	log plain blame