[OSM-talk] Coastline

[Martijn van Oosterhout]

On Fri, Aug 7, 2009 at 9:43 AM, Andre Hinrichs<andre.hinrichs at gmx.de> wrote:
> Am Samstag, den 01.08.2009, 22:45 +0200 schrieb Martijn van Oosterhout:
>> It's still on hypercube and it's not super fast, but it does appear to
>> work. Let me know if you see something odd.
>
> It seems that there is a problem with very small islands. They are
> reported as buggy even if they seem to be ok. I've reported such an
> error a while ago on WIKI:
> http://wiki.openstreetmap.org/wiki/Talk:Coastline_error_checker

Yeah, basically, there is some rounding done to simplify the polygons
so that stuff that makes no difference in rendering gets filtered
away. If the island is really small the end effect is that the
simplification leaves an area consisting of a single point, and so it
complains.

I could ofcourse stop it complaining, but the islands wont appear in
the output anywhere...

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