[Tagging] How to tag shop areas in a shopping mall ?

[OSMDoudou]

When I tag the perimeter with indoor=room instead of building=yes, JOSM raises an error "Overlapping ways" for the segment B->C in this kind of layout:
A-------->B--------->E
^             |             |
|             |             |
|             |             |
|             |             |
D<-------C<--------F

If I change the tags from indoor=wall to building=yes, no error is raised anymore (but then of course, Osmose will report overlapping building, which is the start of this discussion).

It seems indoor walls cannot overlap. Same if I try indoor=room.

If I delete B->C and tag as shop, then JOSM says the area is not closed.

How should I draw the perimeter of the shop ?

Thx.

-----Original Message-----
From: Tobias Knerr [mailto:osm at tobias-knerr.de] 
Sent: Thursday, January 18, 2018 21:36
To: tagging at openstreetmap.org
Subject: Re: [Tagging] How to tag shop areas in a shopping mall ?

On 17.01.2018 23:16, OSMDoudou wrote:
> There is a shopping mall here [1] for which a mapper detailed the 
> inside shops with a node for the "identity" and an area for the 
> "physical perimeter" of the shop inside the mall. [...] Can you 
> suggest tagging improvements ?

My suggestion (based on Simple Indoor Tagging¹) is to tag the areas with their shop tag, level, and and other attributes such as name. So you get a closed way with some basic tags, for example:

name = Jack & Jones
shop = clothes
level = 0

There's no reason to keep the nodes around once you have mapped the shops as areas, so move all other tags such as opening hours to the area instead.

At this point, you have a perfectly valid representation of the mall, so you can stop here if you want. But if you're interested in adding more details, there's a lot of possibilities: Add indoor=room or indoor=area tags to the shop areas (depending on whether they're fully enclosed with walls or not), and add walls (indoor=wall), corridors (indoor=corridor), doors, elevators, staircases and so on.

Yours,
Tobias

¹ https://wiki.openstreetmap.org/wiki/Simple_Indoor_Tagging

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