[OSM-talk-be] Corine Land Cover France import overlapping in Belgium

[Ben Laenen]

Pieren wrote:
> Hi talk-be list,
>
> First, apologies for my message in english.

Don't worry, most of our messages are in English to solve our linguistic 
problems :-)

> We are preparing in France an import of the Corine Land Cover (CLC)
> landuse polygones. This dataset is generated by all european states
> but the French version has a licence compatible with OSM.
>
> The original dataset is delivered as shapefiles and use a standardized
> "nomenclature" of 36 classes. We decided to migrate most of them (not
> all) following this translation table to OSM tags:
> http://wiki.openstreetmap.org/wiki/WikiProject_Corine_Land_Cover/Tagging_sc
>heme
>
> Before the import, we suppressed all CLC polygons overlapping more
> than 2% with the existing ones in OSM. The problem is that the dataset
> itself is going a bit onto neighbourhood countries including Belgium
> (a rough estimate is about max. 10km).
> So we would like to know if the Belgian community is interested by
> these polygones or if we have to perform a cut-off exactly on the
> border.
>
> To have a preview about the import, we generated a mashup with the
> current Mapnik and a special overlay with the CLC polygones as they
> will be after the import.
> Select/deselect the last overlay "corine-import" to see what will be
> imported.
>
> http://beta.letuffe.org/?zoom=12&lat=50.30141&lon=4.15378&layers=B0000FFFFF
>FFFFFFFFT

I'd say, just upload whatever you have in Belgium. We don't have access to the 
CLC, and I don't think we'll ever have it, as our National Geographic 
Institution is selling them at €2500 http://www.ngi.be/NL/NL1-5-4.shtm (site 
currently down) -- and I don't think we'd be able to use it for OSM even if 
we'd buy it.

Will there be a way to also get the polygons which weren't uploaded because 
they would overlap already existing polygons? Since CLC is likely more 
accurate than the polygons there are now near the French border.

Greetings
Ben