[OSM-talk] West African mangrove forests and PGS coastlines

[Roman Neumüller]

I noticed the same issue on South America's eastcoast and large river  
mounds too...
I think there's no easy solution because the color of mangrove forests and  
the sea
are too near to one another...
Using josm's lakewalker to trace sea/island there' s a
"maximum gray value to count as water" one can play with...

Roman

> In West Africa, I have noticed that mangrove forests are often tagged as  
> sea
> by PGS. Some examples are found at:
>
> Does anyoe have any idea on how to solve this without having to do manual
> tracing for large parts of the coastline and riverbanks?