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[mkgmap-dev] Understanding the sea

From Felix Hartmann extremecarver at googlemail.com on Mon Dec 28 20:27:11 GMT 2009

On 28.12.2009 21:22, Clinton Gladstone wrote:
> On Dec 28, 2009, at 19:54, Mark Burton wrote:
>> I have agreed to help produce a marine map of the Baltic so
>> it would be really nice if the sea was filled in without any really
>> major problems (flooded land, etc.)
> I, unfortunately, can't help you specifically with the generate sea stuff. I can only comment that my previous tests with this option were not particularly satisfactory. Since distinguishing land from water seems to be an important feature of marine maps, I wonder if it makes sense to generate a one-off sea layer using cGPSmapper instead of mkgmap, until the generate sea problems are resolved?
> Or do most marine units have a sufficiently detailed base map? In that case a transparent OSM map (with POIs and other features) might be more appropriate, as this could be layered over the base sea map.
> Cheers.
cgpsmapper produced maps may not be used CCBYSA 2.0 (only non 
commercial). It would probably nevertheless be best to create a layered 
sea map instead of creating it each time. mapnik/osmarender also only 
periodically render the sea/shoreline.
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