[OSM-talk] Fixing broken multipolygons

Yves yvecai at gmail.com
Thu Feb 16 10:51:24 UTC 2017

Is there an example where the community has cleaned up the Corine multi polygons instead of starting from scratch? 

Le 16 février 2017 10:53:42 GMT+01:00, Christoph Hormann <chris_hormann at gmx.de> a écrit :
>On Wednesday 15 February 2017, Sarah Hoffmann wrote:
>> There are some notable holes, for example in the woods of
>> Scandinavia. It would be great if they are gone by the time we
>> switch the software.
>A general recommendation here to the Scandinavian communities - you 
>might seriously want to consider removing the forest/wood polygons from
>the old Corine landcover imports.  These are:
>* factually very inaccurate, usually indicating this area is mostly
>covered rather than this area is actually forested.
>* not aligned to other geometries, in particular water bodies.
>* non-maintainable due to the polygons size leading to mappers widely 
>drawing other stuff over it.
>Newly mapping wood areas from scratch here would likely lead to better 
>and better maintainable data in the long terms.  You could even 
>consider importing newer high quality data with a more sensible polygon
>Christoph Hormann
>talk mailing list
>talk at openstreetmap.org
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