[Tagging] Feature Proposal – RFC – natural=peninsula (Was: Feature Proposal – RFC – place=peninsula)

Christoph Hormann osm at imagico.de
Wed Jan 9 12:52:16 UTC 2019


On Wednesday 09 January 2019, Markus wrote:
> >
> > * seen from water: landmark at the coast to circumnavigate
> > * seen from land: coastal extreme point on land in a certain
> > direction
>
> Couldn't 'a point to circumnavigate' lead to confusion because
> peninsulas needs to be circumnavigated too?

I don't know - that depends on how you want to define natural=peninsula.
In classic navigation you use landmarks at the coast to plot and verify 
your course.  That is what is meant with the above.

> Isn't this clear by definition? The current definition of
> natural=peninsula is 'a piece of land nearly surrounded by water or
> projecting into water from a larger land mass' while a coastal area
> is longish.

As you can see the concept of 'nearly' is pretty vague here.  The 
description for bays uses the term 'mostly' and look what this has led 
to:

https://www.openstreetmap.org/relation/4681569
https://www.openstreetmap.org/way/552099079
https://www.openstreetmap.org/relation/8399350

So if you want natural=peninsula to mean something more specific 
than 'some named land area at the coast' (like bay tagging on polygon 
meanwhile just means 'some water area near the coast a mapper wanted to 
label') you better try to make the definition somewhat clearer.

-- 
Christoph Hormann
http://www.imagico.de/



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