[Talk-GB] Sea 'bleeding' into land in northern France

[Mateusz Konieczny]

Aug 2, 2022, 22:52 by talk-gb at openstreetmap.org:

> On Tue, Aug 02, 2022 at 02:40:45PM +0000, John Hubbard via Talk-GB wrote:
>
>> Hi, I hope someone can help with this. I'm a big fan of OpenMapChest and am amazed by Ben Konrath's lovely maps. There's a slight problem (of the first world type) in that in his map of Western Europe (specifically the Calais tile) the sea appears to have breached the sea wall and the land is inundated with blue! Ben says he can't help because it's due to a bad change someone has made to OSM. There's also something funny further west, around Le Havre. He says the problem will be solved by whoever made the change, but it's persisted now for quite a few iterations of his map.
>>
>
> Those maps are generated with mkgmap, and this sort of problem happens
> occasionally when coastlines get broken in OSM. You might look at the
> archives for mkgmap-dev at lists.mkgmap.org.uk or perhaps post there
> directly.
>

See also https://wiki.openstreetmap.org/wiki/Tag:natural%3Dcoastline
and https://wiki.openstreetmap.org/wiki/Coastline#Rendering_in_Standard_tile_layer_on_openstreetmap.org
for

- QA tools
- info about delayed moderated coastline data

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