[OSM-talk] Boundary relation with >5000 members?

[Julio Costa Zambelli]

Hello,

Frederik got the idea almost completely right. The coastline is not the
Chilean maritime border but just the regional and municipal border. This is
a matter of jurisdiction since the authorities in the land are not the same
as in the sea. But we DO have territorial waters, but those are part of the
country as a whole and not territorial waters of a certain region or
municipality.

The extension of certain land borders into the sea, is just to signal (to
the people watching the map, without any other data source) that the islands
in one side of those lines are part of the X region, and the islands in the
other side of the line are part of the Y region. (Examples:
http://osm.org/go/MIvRLK- and http://osm.org/go/JczwGC-).

Regards,

Julio Costa
OpenStreetMap Chile
http://www.openstreetmap.cl/


On Mon, Mar 29, 2010 at 7:00 AM, Frederik Ramm <frederik at remote.org> wrote:

> Hi,
>
> Roland Olbricht wrote:
> > For this reason I would strongly encourage you to use the territorial
> waters
> > like most countries in Europe.
>
> As far as I understood Julio, he wanted to say that while they'd use the
> territorial waters for the country of Chile, their administrative
> subdivisions do *not* have something like territorial waters, so their
> authority ends at the coastline.
>
> I'm starting to think that maybe we should stop rendering administrative
> boundaries altogether. I think that technically Julio did the right
> thing, but this example shows that rendering that kind of boundary is
> somewhat useless.
>
> You might now be tempted to say: "Oh well, let's just skip rendering
> boundaries where the boundary is a also coastline". But firstly this is
> likely to be complicated with Mapnik, and secondly, much to my dismay,
> mappers in Germany have begun to map municipal boundaries along the
> coastline as a separate way, with a geometry *different* from the
> coastline, arguing that even if the boundary has been defined to match
> the coastline a certain time ago, the coastline may have changed and
> legally the boundary has not, creating little bits of maritime territory
> belonging to the municipality and little bits of land territory between
> the coast and the border of the seashore municipality.
>
> Bye
> Frederik
>
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