[Tagging] The showstoppers for mapping Scandinavian nature.

[Joseph Eisenberg]

The problem with a relation like this which tries to represent an area for
a part of a mountain range (the "Mürzsteg Alps") is not centimeter
precision, but that it cannot be mapped accurately to even the nearest
kilometer.

Look at this area:
https://www.openstreetmap.org/relation/2247685#map=14/47.5438/15.3067&layers=C

The currently defined area of the mountain range follows the river in the
southwest, but then suddenly crosses the valley in a nearly straight line
to the primary highway, and then follows this through a village, crossing a
ridge and a stream on the way.

There is no physical object that can be followed along that straight-line
way.

This leads to silly situations where half of a village in a valley is
considered part of this mountain range, while the rest of the village on
the other side of the main street is in a different "mountain range":
https://www.openstreetmap.org/relation/2247474

Boundaries like this are not verifiable because they cannot be confirmed to
be correct, except by appealing to a semi-official authority, "the
definition made by the local alpine club" (
https://de.wikipedia.org/wiki/de:Alpenvereinseinteilung%20der%20Ostalpen?uselang=de#/media/Datei:AVE_Ostalpen.png)
- which
in this case has defined an area which is convenient for their uses, but
does not represent a physical reality.

-- Joseph Eisenberg

On Mon, Dec 28, 2020 at 2:41 AM Martin Koppenhoefer <dieterdreist at gmail.com>
wrote:

>
>
> sent from a phone
>
> > On 28. Dec 2020, at 11:10, Florian Kratochwil <florian at kratochwil.at>
> wrote:
> >
> > So, in my opinion, mountain ranges are verifiable, it is just difficult
> to verify because you have to look at many different sources, maybe even
> ask many people.
>
>
>
> yes, mountain ranges are verifiable, but their borders are also fuzzy, and
> regardless how many sources you look at, you won’t be able to draw a border
> with centimeter precision (OpenStreetMap’s precision given by the
> coordinate precision). I.e. mapping mountain ranges as areas is
> inappropriate and unsuitable.
>
> Cheers Martin
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