[Developers] reduction on sphere

Michael Koppitz koppitz at aei.mpg.de
Tue Sep 26 09:48:17 CDT 2006

Hi all,

it seems a common task for many applications to have some
reduction of some value on a sphere (integral, max, min).
Would it be useful to implement a general reduction operator
or (probably even better) to give existing reduction operators a mask 
they are confined to work on?


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