[Tagging] Feature proposal - RFC - Documenting feet as an an optional elevation unit

[Peter Neale]

0.3048 m according to my ConvertPad app on my phone - and according to Wikipedia (so that must be true!)
Regards,Peter
(PeterPann99)

    On Sunday, 28 January 2024 at 19:36:06 GMT, Philip Barnes <phil at trigpoint.me.uk> wrote:  
 
 The legal definition of a foot is of course  0.348 m.

"Since an international agreement in 1959, the foot is defined as equal to exactly 0.3048 metres'.

Phil (trigpoint)

On 28 January 2024 18:57:45 GMT, Minh Nguyen <minh at nguyen.cincinnati.oh.us> wrote:
Vào lúc 04:08 2024-01-28, Greg Troxel đã viết:

Minh Nguyen <minh at nguyen.cincinnati.oh.us> writes:


Vào lúc 19:50 2024-01-27, Brian M. Sperlongano đã viết:

Uh so I did the math, and unless I've got this wrong, the difference
between survey feet and international feet for tagging, let's say,
Mount Everest, is less than seven one-hundredths of an inch.  So I'm
really not even sure why we're discussing it beyond the fact that
we're all nerds about this sort of thing.


You got me. :-) The actual proposal doesn't mention the foot's two
definitions at all, and so far I'm planning to keep it that way.


I think it's important to be definitionally correct, even if it doesn't
really matter. It's a slippery slope, and pretty soon \pi is 3.


Poor Indiana. ;-) The definition of the foot would apply to the ' and ft abbreviations in every context, not just the ele=* key, so I'd suggest considering it separately, probably without the formality of a vote. The main unit symbol listing has come together more informally over the years. [1]

Sooner or later, OpenHistoricalMap will have a lot of fun with this issue...

[1] https://wiki.openstreetmap.org/wiki/Map_features/Units


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