[OSM-talk-be] CORINE Land Cover 2000

[Renaud MICHEL]

Hello Lennard
Le dimanche 16 mai 2010 à 21:47, Lennard a écrit :
> As some of you may know, last year the French have imported the CORINE
> Land Cover 2006 (CLC 2006) dataset. This dataset aims to classify every
> bit of surface of the participating countries. It is a project of the
> European Environment Agency (EEA) in conjunction with national mapping
> agencies. For Belgium, I believe this would be the NGI/IGN.
> 
> While they did get approval to import their CLC 2006 dataset, getting
> approval from the NGI/IGN in Belgium would probably be problematic, and
> actually getting the data from them even worse. Although, if we don't
> ask, we'll never know for sure. (Anyone up for contacting them?)
> 
> However, the CLC 2000 dataset is fully available on the EEA website, and
> has usage terms that seem to be very compatible with OSM.
> 
> "Unless otherwise indicated, re-use of content on the EEA website for
> commercial or non-commercial purposes is permitted free of charge,
> provided that the source is acknowledged."
> 
> On IRC, someone wanted to contact the EEA explicitly to obtain
> permission (for Belgium, but why not ask this for the entire dataset?).
> I don't see a problem with that, although for me the terms on the EEA
> site are clear.

Well, there's no harm in asking, but as you say it seems compatible with the 
actual CC-By-SA (but I have no idea for ODBL).

> I have made an overlay which shows the CLC 2000 data on the OSM map:
> 
> http://mijndev.openstreetmap.nl/~ldp/clc2000/
> 
> This is so you can already enjoy what we may be able to import, and
> maybe use it as a backdrop in Potlatch/JOSM or other editors to use. I
> don't recommend actually tracing the polygons, as a direct import is
> much easier.
> 
> The amount of changes between CLC 2000 and CLC 2006 is on the order of
> 0.5% over the entire covered region. The overwhelming amount of polygons
> would be unchanged. I think there's not much harm in working with CLC
> 2000, even if it is 10+ years old.
> 
> I have received the scripts used for the French CLC 2006 import, and can
> adapt and use those for an import of CLC 2000 for any area. I'm going to
> test them and prepare an import file for Belgium, which can be imported
> later on, if no valid objections are lodged.

It seems like a great idea, how does the import work?
We have already some data imported in Belgium from the french import, will 
those regions need manual editing to integrate the two imports?
Should we keep the landuse where they already exists in OSM belgium, or is 
the CORINE data much more accurate and should be preferred?

I manual edit/import is required for some regions I can help (for the free 
time I have) to tidy up the data.

France looks great now with all the landuse areas, I hope we can make 
Belgium look as good :-)

-- 
Renaud Michel