Hi, in fact CLC data is not so accurate, as the patch size should be at a minimum of 25ha and the segment minimum length of 100m ! it's not bad when looking the data at a small scale, but when using a high zoom level it's not so good ...
May I suggest to use the word "CLC" or "Corinne" in your source tag ? "Készítette a FÖMI a KvVM megbízásából ", even with the use of an automatic translator, it is really not obvious that it's related to CLC import ! Don't hesitate also to make a wiki page about Hungary CLC import, and to add oit on the lit ( http://wiki.openstreetmap.org/wiki/WikiProject_Corine_Land_Cover) Cheers, Sylvain 2012/10/29 Balázs Szalkai <[email protected]> > More than about one third of Hungary has already been imported from the > CLC dataset by others. The following tag is used for attribution: > > source=© EEA, Koppenhága (2009); Készítette a FÖMI a KvVM megbízásából > (2009) > > I'm not a lawyer but I think this tagging is correct. see > http://lists.openstreetmap.org/pipermail/talk/2011-April/057501.html > > What I do about existing data is: I check all the existing landuse > polygons by hand before import. I remove most of the landuse=residential > polygons, as they are usually also present in the CLC dataset and the CLC > versions are more accurate (checked with Bing). There are also some > existing sporadic forests and meadows, but usually they are also > represented in CLC so then I delete them and copy the extra information > (e.g. name of forest) into the newly imported forest polygon. There were > 2-3 cases when CLC and existing data disagreed about a forest, CLC marked > it as farm. Then I left both the existing and new data in place and tagged > the forests with "fixme=please check this, i don't see any forest here on > Bing and CLC marks this as farm, too" or something. > > I don't think CLC is low resolution. Vineyards, meadows, forests, etc. are > usually accurate. See for example > http://www.openstreetmap.org/?lat=46.3314&lon=19.0919&zoom=13&layers=M You > can see here that CLC is well-detailed. Nevertheless, there are some voids > that need to be filled manually in the future, as you can also see on the > linked map fragment. > > > On Mon, Oct 29, 2012 at 3:26 AM, Paul Norman <[email protected]> wrote: > >> What tagging are you proposing to use?**** >> >> ** ** >> >> What do you intend to do about existing data?**** >> >> ** ** >> >> I’ve heard that CLC is a fairly low resolution dataset and not well >> suited to OSM which is higher resolution. Is this true in your area?**** >> >> ** >> > > _______________________________________________ > Imports mailing list > [email protected] > http://lists.openstreetmap.org/listinfo/imports > >
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