A structured grid that "wraps"

[Joey Mukherjee]

Hello!

I have a structured grid which I want to "wrap" around.  In other words, the 
i(n) element's neighbor is also i(1).  Does this make sense?  If so, is it 
possible?

The reason I ask is I am constructing surfaces which create spheres.  The sphere 
always has a notch cut out of it where (I am assuming) the grid starts and ends.

Thanks for any input!

Joey

+--------------------------------------------------------------------------+
+     Joey Mukherjee                     "I am amused by the simplicity    +
+      joey at swri.org                      of this game.  Bring me your     +
+  http://www.space.swri.edu/~joey        finest meats and cheeses."       + 
+                                                                          +
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