[Tagging] The actual use of the level tag

Lionel Giard lionel.giard at gmail.com
Mon Jan 21 09:10:59 UTC 2019

Yes it makes sense to keep this distinction : level tag can just be the
"logical order" of levels going from -xx to xx with an arbitrary 0 for each
building, so tools know the order (which one is above the other). Simple
Indoor Tagging already suggest the level:ref for the "local" naming scheme.
It could be used by tools when they show you the name of the level in their
interface (One example : a building with tags "level=0" + "level:ref=Ground
floor", instead of showing "level 0", the tool can display "Ground floor"
-> both the data user and the data consumers are happy ;-) ).

Le lun. 21 janv. 2019 à 09:20, PanierAvide <panieravide at riseup.net> a
écrit :

> Hello,
> Just for your information, there is also this "level:ref" tag which was
> used in various context to solve this problem :
> - level tag is still used as defined in Simple Indoor Tagging
> - level:ref has a value which is linked to operator naming of levels
> That way, casual mappers/consumers don't need to stick to level definition
> which doesn't make regarding operator naming, they can set level:ref
> according to what they are used to see. And we keep the level definition
> which makes more sense for tools.
> Regards,
> Adrien.
> PanierAvide
> Géomaticien et développeur
> Le 21/01/2019 à 09:05, Simon Poole a écrit :
> As tordanik has already pointed out the main issue with the proposals is
> that there is no inherent ordering that can be deduced from level values
> on objects if they are not (integer) numbers, so any such scheme
> requires far more insight, effort and available context from
> joe-casual-mapper and joe-casual-data-consumer to get layering right.
> With the current scheme that is a no-brainer even if there are
> discrepancies between actual numbering of the floors and what is being
> used in OSM.
> Simon
> PS: addr tags are for postal addresses I don't think using them as a
> level name/ref makes very much sense outside of that very narrow
> application.
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