[OSM-dev] Topology requirements for shorelines

[Jon Stockill]

Cartinus wrote:
> On Sunday 02 November 2008 01:50:11 Ben Supnik wrote:
>> - What happens if there are overlapped coastline ways?
>> - What happens if there are holes in the coatlines?
>> - What happens if there are double windings (imagine two full counter
>> clockwise revolutions making interlocked loops).
> 
> Then they show up as an error on:
> http://tile.openstreetmap.nl/coastlines.html
> and hopefully somebody will correct it.
> 

You'll also find polygon shapefiles available for download there too -
I've been experimenting with these to build flightgear scenery recently,
with some very nice results.

Jon