[OSM-talk] Tracing coastline by hand unnecessarily

[Martijn van Oosterhout]

On Jan 15, 2008 10:48 PM, David Groom <reviews at pacific-rim.net> wrote:
> > (*) based on PGS containing 51 million points and the database
> > currently holding 14 million coastline related points.
>
> Though the import script does some form of simplification, doesn't it?

It apparently does, though it my experience it doesn't remove even 10%
of the points, so it wouldn't account for the difference (though I did
mostly worse case areas with a lot of detail).

Incidently the simplification seems to try to minimise changes in
lengths which seems wierd, I would have though preserving area was
more important. I tends to (in my experience) convert small squares to
triangles half the size.

Have a nice day,
-- 
Martijn van Oosterhout <kleptog at gmail.com> http://svana.org/kleptog/