[Tagging] Adding floor location information

[John Willis]

Javbw

> On Sep 30, 2015, at 12:38 AM, Martin Koppenhoefer <dieterdreist at gmail.com> wrote:
> 
> 
> 2015-09-29 13:10 GMT+02:00 Eugene Alvin Villar <seav80 at gmail.com>:
>> > addr:floor is about the address, "level" is used more often.
>> 
>> When addr:floor=* was first proposed a few years ago, it had almost
>> the exact same semantics as level=*.
>> 
>> Now, I'm using addr:floor=* to indicate the human-readable floor
>> information while level=* is used for the machine-readable number. For
>> example: addr:floor=Mezzanine Level and level=0.5
> 
> 
> +1, I'd see addr:floor as always in local units (the way it is called in the building and would be written on a letter), while level is the osm version, counting "levels" from ground floor=0 upwards and downwards.

Isn't addr:* for its postal / legal location definition? 

What if the floor level is not part of its address? I think most business/dwellings don't have floor in their address, which is why its usage (152 for points) is so low. Most buildings hide that information in its room number (1222 =floor 12 room 22). 

This is why I suggested level:ref=*

You could tag however they are referred to (the ref part), which is often independent of its address, and sometimes independent of level. Most mappers rely on level=* to tag this info, and is probably sufficient for most. But since we are talking about names and schemes that deviate from concentional levels, level:ref would show this deviation, which is why it is a subset of level. I guarantee you those shops addresses are something like suite/space #270, and may or may not encode floor information, so addr:floor seems wrong to me. 

Also, level=2 to us in OSM is referred to as "2F" in signs for many Japanese malls on signs and maps. Being able to give rendered. maps and data customers the proper ref to display when more info is requested about the store (eg:click on the icon, or however data customers wish to show additional info) would be useful.

Mapping 2-3 malls' stores would go over the tag count of addr:floor quite quickly. 

Javbw
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