[Tagging] For your comment: New template: Unit summary

Lukas Sommer sommerluk at gmail.com
Fri Apr 3 08:02:33 UTC 2015

> It's not a contradiction, it's a proposal.

So please move it to the “Proposal/” namespace.

2015-04-03 8:01 GMT, Lukas Sommer <sommerluk at gmail.com>:
> The default unit is _not_ always “meters”. There are tags where the
> default unit is “meters” (e. g. width) and there are others where the
> default unit is “kilometers” (e. g. distance).
> “Centimeters” isn’t in the current list of accepted units at
> http://wiki.openstreetmap.org/wiki/Map_Features/Units.
>> A wide variety of formats are acceptable:
> The list that is following this statement doesn’t contain “km”. It
> seems to be only a list of some non-mandatory examples. So the
> statement sound like it’s up to the mapper to choose whatever unit he
> likes (and software has to find its way to deal with this situation).
> And that’s a very bad idea. We need a _defined_ list of accepted
> units. The worst thing we can do is promote that everybody uses
> whatever unit (and abbriviation) he wants. Map_Features/Units has such
> a list, and I see no reason to invalidate this.
> I think this template should or be deleted or be changed to reflect
> exactly what Map_Features/Units says. (But probably even a direct link
> to Map_Features/Units would be easier and clearer – so I don’t see any
> need for this template.)
> 2015-04-03 6:49 GMT, Martin Vonwald <imagic.osm at gmail.com>:
>> This contradicts in many cases our current page
>> http://wiki.openstreetmap.org/wiki/Map_Features/Units
>> * The use of "meters" is discouraged
>> * "cm" should not be used generally, maybe only on some specific tags
>> * There should always be a space in front of the unit
>> * Neither "feet" nor "inches" should be used, use <feet>'<inch>" instead
>> * It is not discouraged to not include the default unit
>> regards,
>> Martin
>> 2015-04-03 7:21 GMT+02:00 Bryce Nesbitt <bryce2 at obviously.com>:
>>> To try and make unit description consistent here is a proposed template.
>>> This would apply to tags like ele, est_width, circumference, height,
>>> width, maxwidth, minwidth, distance.  A separate table could be made for
>>> speed & weight.
>>> Use as follows:
>>> {{Unit_Tagging_Length|tag_name|furlongs}}
>>> The template is defined at:
>>> http://wiki.openstreetmap.org/wiki/Template:Unit_Tagging_Length
>>> Other unit pages include:
>>> http://wiki.openstreetmap.org/wiki/Category:Units
>>> ------------------
>>> This particular summary promotes the notion of "human centred tagging",
>>> with parsers left to make conversion to computer readable units.  It
>>> also
>>> promotes explicit numbers (e.g. 20 m) over implicit ones ( e.g. 20 ).
>>> Given the variety of unit styles already in the database, this seems to
>>> be
>>> the most pragmatic approach.
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>>> Tagging at openstreetmap.org
>>> https://lists.openstreetmap.org/listinfo/tagging
> --
> Lukas Sommer

Lukas Sommer

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