[Talk-ca] Sinking islands...

[Lennard]

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