On 23-9-2010 15:09, G. Michael Carter wrote:
I was importing data in the Georgian Bay area and I noticed something.
If an island is natural=land it renders in mapnik as white, regardless
of the outer multipolygon. if you have natrual=wood or possibly others,
it sinks if it's not role=inner.
This is at least what I've observed so far. It's rather hard to figure
out when the mapnik tiles get cached and don't refresh in a timely
fashion. :-)
Rendering order is, generally: landuse -> water -> natural=land.
natural=land is very old, and predates multipolygons by years. It used
to be the only method to have islands appear in water, without cutting
up the water as 2 'C' shaped areas.
These days, it's better to use multipolygons for the water, and have
islands as inner rings.
--
Lennard
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