On Sun, Apr 15, 2012 at 01:47:31PM -0700, Scott Hawley wrote:
// On the regions for which the finer grid overlaps the coarse grid, // do some operations...
You might be able to use the set operations on the regions first to find out what that region is without looping and then loop over whatever level you want and use the result from before to know where to do something.
Frank