[OSM-talk] coastline in mapnik

[Jon Burgess]

On Sun, 2010-11-07 at 23:29 -0800, Michal Migurski wrote:
> > I think we went back to some older shapefiles after reports of a
> > significant problem with one of more recent updates. I just updated
> the
> > files with coastlines generated from the planet file this week. 
> 
> 
> Thank you Jon!
> 
> Can I ask if it would be possible to include in those shapefiles a
> processed coastline that's just the outlines, rather than the tiled
> land area polygon? osm2pgsql doesn't import natural=coastline (a
> hardcoded exception) and sometimes it's useful to put lines on
> coastlines, for which the processed_p data isn't very well suited.

There are three intermediate shapefiles produced by the coastcheck
utility:

# coastline_p  - points with errors
http://yevaud.openstreetmap.org/coastline_p.tar.bz2

# coastline_i  - incomplete sections of coastline
http://yevaud.openstreetmap.org/coastline_i.tar.bz2

# coastline_c  - complete sections
http://yevaud.openstreetmap.org/coastline_c.tar.bz2

They are the input to last step of the processing which creates the
closed polygons for each tile in the final 'processed_p' output. At no
point is there a file which has fully closed polygons without the
tiling. 

   Jon