Hi,
On Mon, Jan 17, 2011 at 03:37:45PM +0000, Dermot McNally wrote:
> I wish to announce the planned import of the Corine 2006 land cover
> data set for the Republic of Ireland, as outlined here:
>
> http://wiki.openstreetmap.org/wiki/Republic_of_Ireland_Corine_2006_Import
>
> The quick summary: After this import, the map will have lots more
> pretty colours corresponding to whether an area is urban, farmland,
> pasture, forest, bog etc. Zoom into France or Romania to get an idea
> of how this will look.
Sounds nice!
> Pay special attention if you have mapped land cover areas yourself -
> parks, forests, lakes, even landuse=residential. As currently planned,
> the import will lay down overlapping polygons over the ones you
> already mapped - it's messy, but simple. We will then need to do some
> - hopefully not much - work to de-duplicate. The benefit of doing this
> manually is that we can keep the best version.
>
> If you have an opinion on this import, please voice it promptly so we
> have a chance to benefit from your input.
Are there any existing tools to spot overlapping polygons of a
particular type in an OSM database? Something that could check for all
conflicting polygons with "natural=*" (or whatever) would make the
clean-up much faster. Some areas have quite a few bits of greenery
tagged already:
http://www.openstreetmap.org/?lat=52.958&lon=-7.236&zoom=11&layers=M
A simpler option might be to add "unchecked=1" to the imported areas,
which could be deleted when somebody has manually checked that it's
okay.
Roughly how many polygons are there in the import?
Cheers,
Andrew
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