On Mon, 14 Apr 2008, Cartinus wrote:
> Lots of coastline in OSM comes from PGS data. According to
> http://wiki.openstreetmap.org/index.php/PGS_whitepaper
>
> "This new shoreline is an approximation of the High Water Line; it is NOT a
> Mean High Water Line since the source data have not been tide coordinated."
>
> This of course says nothing about other coastline data.
Shall I update the wiki to clarify that natural=coastline is (roughly) the
mean high water mark so we can at least be consistent?
> Dutch topographic maps don't consider tidal flats a part of the land. It is
> coloured the same colour blue as the sea, but it has lots of black dots in
> it.
That's fine - these areas can just be outside the coastline with
water=tidal. It probably doesn't matter what we decide the coastline is
going to represent so long as we are consistent.
- Steve
xmpp:[EMAIL PROTECTED] sip:[EMAIL PROTECTED] http://www.nexusuk.org/
Servatis a periculum, servatis a maleficum - Whisper, Evanescence
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