[OSM-dev] What country is something in?

[OJ W]

Perhaps someone who knows GIS software could take a simple coastline
dataset like GSHHS (doesn't need to be as detailed as PGS or OSM, and
GSHHS doesn't split-up polygons) then expand all the coasts by 20
miles and provide an OSM file that we can import sections of as part
of a country's border?



On Fri, Oct 31, 2008 at 5:53 PM, Roland Olbricht <roland.olbricht at gmx.de> wrote:
>> That's why it was so surprising to see the imported USA and California
>> borders in OSM running along the beach - surely we want to move them
>> out to sea?
>
> It's just additional data. So a user with sound knowledge of the U.S. border
> regulation might simply correct or delete the robot generated sea border.
>
> Still, the coastline contains way more nodes than any other kind of
> borderline. So using only the beach as border would fill up a program working
> with boundary data with about 70 times more data than the solution with a
> generated sea boundary.
>
>> Currently the borders are marked with the 2 countries - do we need to
>> allow "region:left=international" if it's a border with the ocean
>> instead of another country?
>
> From my point of view, these tags in the individual ways aren't anyway a good
> idea, as they are more difficult to maintain consistent and complete than a
> relation would be.
>
> Beside that, I have no idea whether it is useful to have a relation collecting
> all the ways that are boundary of the open sea.
>
> Cheers,
> Roland
>
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