[Tagging] Mapping of mountain ranges (Was: The showstoppers for mapping Scandinavian nature.)

[Martin Søndergaard]

There are some interesting ideas in these threads including Brians proof of
concept. But I want to just quickly extend the implications of this
discussion to other similar natural features, e.g. bays, straits, valleys
etc.

If it was decided that mountain ranges should be determined by relations of
peaks or ridges, then it should be clear that such a definition can't be
extended to many (or any) of the other similar "unverifiable" features;
bays clearly don't have an analogous feature to peaks.
I can imagine a world where each of these features have their own complex
way of being defined resulting in a mess of different workflows. "How do I
add a mountain range again? Oh yeah, I make this relation of ridges". "But
what about valleys? I can't quite remember; was it something like...", "But
what about straits?", and on and on it goes.

Disregarding possible disadvantages for a moment, the advantage of simply
representing these features as an approximate simplified polygonal area is
that the "workflow" becomes the exact same for all of these features.

/Martin Søndergaard

On Mon, 28 Dec 2020 at 22:37, Graeme Fitzpatrick <graemefitz1 at gmail.com>
wrote:

> But mapping mountains & valleys should be doable.
>
> Here's a look at some of our Hinterland:
> https://goo.gl/maps/p4D43C1UkDbEi8V1A
>
> From the west, you have Lamington Plateau dropping (sometimes with sheer
> cliffs) into Numinbah Valley, which then climbs up to Springbrook Plateau,
> which also has a number of sheer cliffs edging it - along the southern
> side, these cliffs form the border between Queensland & New South Wales. To
> the east / south east, it then drops into Tallebudgera & Currumbin Valleys,
> which are separated by another ridge.
>
> It would be quite easy to map them all by drawing a line along the cliff
> edges where visible, & where there's no sharp divide, draw a line "half"
> way between the grass of the valley floor & (in this example) the thick
> bush on the mountain tops.
>
> Exact? Maybe not?
>
> Good enough to say this area is this, while that area is that? Yep!
>
> Easily correctable as further data, or local knowledge, becomes available.
> Yes, again!
>
> Thanks
>
> Graeme
>
>
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