[Tagging] Tagging standards [moved from osmf-talk]

[Tomas Straupis]

2022-10-23, sk, 22:31 Brian M. Sperlongano rašė:
> I agree that there is a set of "core" tags whose meaning is so widely understood
> and established that they are standard tags by usage and convention today. For
> the case of these "core" tags, I'm not sure what value we would add by labeling
> them "standard" and codifying their existing meaning.

  As there have been incidents where widespread and basic tags have
been known and widely understood and still some inexperienced people
after several months of "practice" in OSM managed to push changes to
those with devastating effects still visible today it is still a very
good idea to clearly state such "standard" tags and "freeze" them.

  There should also be clearly defined criterias:
  1. how tags GET INTO such a standard "position" - for example
absolute count higher than N, or relative count of tag usage A versus
other variants of tagging the same class/attribute, timespan of usage
is more than N years
  2. what are the mandatory reasons to CHANGE the meaning or replace
the tags with something new. My personal opinion this could be a
calculation of added value versus the change cost but there are
probably some other options ("voting" by random people as it is in
"wiki" should not be the option).

  I strongly believe that freezing "main" tags for main landuse,
roads, waterways, buildings, places, MAIN amenities (classes used in
99% of map/gis products) would allow data consumers to spend less time
on running after changes, reading thousands of letters to identify
possible changes to important tags etc. Very few people care how
colour of a bench is tagged but all care how a lake is tagged.

-- 
Tomas