> 
>> 
>> 
>> hi I want to union all the polygons in a list of elements and get all the 
>> distinct polygons at the end.
>> union seems to produce a polygon if the 2 objects intersect and a 
>> multipolygon if not.
>> If i Union all the elements in a polygon set i would get at the en only one 
>> multipolygon. (reduce +lambda + union)
>> How can i get the distinct polygons objects from a multipolygon?
>> 
>> Thanks
> 

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