[Tagging] The endless debate about "landcover" as a top-level tag

Peter Elderson pelderson at gmail.com
Wed Jun 13 06:03:35 UTC 2018


Would it be possible to get the osm-community in Belgium to agree on one
tagging principle for trees/wood/forest?
And get it done that way?

2018-06-13 7:47 GMT+02:00 Marc Gemis <marc.gemis at gmail.com>:

> On Tue, Jun 12, 2018 at 10:57 PM Mateusz Konieczny
> <matkoniecz at tutanota.com> wrote:
> >
> >
> >
> >
> > 12. Jun 2018 13:22 by marc.gemis at gmail.com:
> >
> > How do people in GIS know how many square meter of forest there is in
> > a country based on OSM-data ?
> >
> >
> > I would start from something like: total area of area covered by
> >
> > landuse=forest and natural=wood
> >
> > after excluding very small areas.
> >
> >
>
> won't work, see e.g.
> https://www.openstreetmap.org/search?query=waasmunster#map=
> 16/51.1215/4.0932&layers=N
> that's not a forest, that are a lot of private gardens with trees in it.
>
> >
> >  Is the data suited for that ?
> >
> >
> > Depends on (a) where (b) what kind of accuracy is needed, forest in many
> regions
> >
> > are unmapped or partially mapped.
> >
> >
> >
> > How can I find those places with OSM data ?
> >
> >
> > What you exactly want to find?
>
>
> A forest is a place where you can walk, ride, cycle. Not someones
> private backyard.
> Our government talks often about there is so many square meter of
> forest in Belgium.
> It's not sufficient to subtract all small areas, you need to subtract
> somehow everything that is not a forest (see above)
>
> >
> >
> >
> > I thought I had an answer for all the above questions when
> > natural=wood, landuse=forest, landcover=trees where used "properly".
> >
> >
> > No, you cant. As there are conflicting tagging methods
>
> If everything was "properly" mapped with those 3 tags I could come up
> with an algorithm. Not with the current mess of course.
>
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-- 
Vr gr Peter Elderson
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