[mkgmap-dev] type=multipolygon relations

Sat Jan 18 15:30:34 GMT 2014

Hi all,

from time to time I stumble over mp like this:
http://www.openstreetmap.org/relation/3318482

It contains way 135320941 three times.
In other cases inner ways are duplicated, and that 
really causes trouble when calculating the areas.

I wonder why we don't remove duplicate entries when
we process the members of mp relations. Is there
any possible constellation where this would
cause trouble?

Gerd

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