[mkgmap-dev] Multipolygon problem

Sat Jan 8 10:44:16 GMT 2011

I have attached that patch to limit polygon creation to closed ways. 
It's untested and I assume there are some unwanted effects at tile 
borders. Please check and if you (and others) find it usefull it can be 
committed.

WanMil

> Moin,
>
> I think the problem is not the multipolygon, but that some of the outer ways are
> tagged with surface=sand. These tags are not considered for the multipolygon,
> but for these ways mkgmap creates single surface=sand polygons.
>
> But if you change your polygon style from
>
> surface=sand [0x1b resolution 20]
>
> to
>
> surface=sand&  natural!=coastline [0x1b resolution 20]
>
> this shouldn't happen any more.
>
> Just for a try: What happens, if you remove the surface=sand lines from your
> polygon styles completely?
>
> And one other thing: There was once a patch, which limited the polygon creation
> to closed ways. Does anybody know, what happened to this patch? I really liked it.
>
> Gruss
> Torsten
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>

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