[Talk-GB] Coastline Tidal Positions

Craig Loftus craigloftus+osm at googlemail.com
Thu Sep 16 15:23:12 BST 2010


> Which is more accurate: the OS Streetview data that shows MHW (spring, I assume) or the PGS data?

I haven't used it for coast lines, but doesn't OS Vector District
include the high water mark? This would be the most 'accurate',
although not necessarily the most 'correct' source? Certainly better
than tracing from Streetview.

http://wiki.openstreetmap.org/wiki/Using_OS_Shapefiles

Craig

On 16 September 2010 13:00, Graham Stewart <graham at dalmuti.net> wrote:
>
> No firm answer for you, but I can tell you that I've had to move stretches of coastline (around Newcastle) out to the MHW shown on the OS Streetview, as the PGS coastline had me, my GPS trace and a couple of nearby buildings bobbing about in the sea. :)
>
>
> On 16 Sep 2010, at 02:43, "Dave F." <davefox at madasafish.com> wrote:
>
>> Hi
>>
>> http://wiki.openstreetmap.org/wiki/Tag:natural%3Dcoastline
>>
>> Which is more accurate: the OS Streetview data that shows MHW (spring, I assume) or the PGS data?
>>
>> http://os.openstreetmap.org/?zoom=16&lat=51.26415&lon=-3.01719&layers=B0
>>
>> Cheers
>> Dave F.
>>
>>
>>
>>
>>
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