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Steve Hill wrote:
> On Mon, 15 Sep 2008, Keith Sharp wrote:
> 
>> I never got round to implementing anything because I discovered most of
>> the bodies of water in Scotland had been mapped.
> 
> I imagine the NPE maps cover most of the natural bodies of water.

But these can vary quite a bit over 50 years...

What's wrong with Landsat / Lakewalker?

http://wiki.openstreetmap.org/index.php/JOSM/Plugins/Lakewalker

Andy Allan wrote:
> Intermediate-sized voids could be filled with image-cloning techniques
> to make a synthetic landscape. It's fake, but realistic looking.

I think it would be better if fake data looked fake than looked
realistic, but wasn't. That way people are more likely to spot that it
needs fixing, and think about fixing it. Probably using something like a
weighted average of the nearest data we do have, so that large voids
turn into over-smooth areas would be as good a compromise as any.

> Secondly is hydrographic-model approach, which is what I believe the
> GGIAR guys do, and it's how voids are traditionally filled by the
> professionals (generally manually or at least labour-intensively, not
> like us upstarts who just think on a fully automated, global basis ;-)
> ).

I thought that the point of open street map was that we have lots of
labour available from volunteers. :-)

Robert (Jamie) Munro
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