[OSM-talk] Swedish water is pretty thin atm

[Michael Collinson]

At 08:52 PM 1/31/2008, Erik Johansson wrote:
>Hi all
>
>I need to ask you how can I get water to Stockholm, the Venice of the
>north, is there something I can do about this?
>
>The wiki page seems to say "Hey it works in England!". But gives no
>indication on how I should make the Baltic Sea into on big polygon so
>Mapnik is happy, I really want those shorelines, coastlines, waterways
>to be rendered nicely in Mapnik.
>
>
>Problem areas:
>Sweden, Stockholm:
>http://openstreetmap.org/?lat=59.345&lon=17.925&zoom=10&layers=B0FT

As I understand it, Mapnik does not take 
coastline directly from the OSM database but from 
shapefiles derived from it and other sources. So 
there is a development lag. That was because OSM 
did not have coastline at all for huge areas of 
the world.  Over just the last few weeks has 
there been feverish coordinated global activity 
thanks to  Martijn van Oosterhout's 
http://tile.openstreetmap.nl/coastlines.html tool.

I've been working on the Baltic, especially the 
Swedish side and especially the Stockholm area 
and Lake Mälaren since October.  The Swedish side 
should be almost completely clean except for one 
tiny problem near Stockholm that is still eluding 
me.  On the Finnish and Baltic States side, there 
should be a continuous clean main coastline all 
the way around but smaller island problems still 
need low priority attention.  The mainland 
coastline is currently divided into long ways 
about 1,000 segments long for easy downloading 
and highlighting.  These ways should also be 
annotated "main coastline" to distinguish them from islands in local areas.

http://tile.openstreetmap.nl/coastlines.html?zoom=6&lat=59.6595&lon=24.58963&layers=B00T 
- Baltic digitisation and cleanup up status

Mike
Stockholm