Warn about indoor=no inside and indoor=yes outside of a building polygon

[skyper]

I recently found objects with indoor=no inside a building polygon. Without any or identical value of layer=* this should trigger a warning. Similar is true for indoor=yes without a surrounding building polygon.

[Hufkratzer]

Some mappers think that something can have indoor=yes and outdoor=yes at the same time. Maybe this is not a good idea, but it is in the wiki, see:

• ​https://wiki.openstreetmap.org/w/index.php?title=Tag:indoor=yes&type=revision&diff=2247395&oldid=2247369
• ​https://wiki.openstreetmap.org/w/index.php?title=Key:outdoor&type=revision&diff=2247564&oldid=2247389

[Klumbumbus]

Also I just think of a building overhang or arcades (e.g. ​https://de.wikipedia.org/wiki/Arkade#/media/Datei:Arkadenhof_der_Universt%C3%A4t_Wien-2_1200.jpg) then a feature can be outside while being inside the building polygon in osm.
This was maybe even the reason for indoor=* and outdoor=* in the first place to mark things e.g. as outdoor while it seems to be indoor in the osm data.

[skyper]

I think both indoor=* and outdoor=* with identical values does not make sense but thanks for the reminder of outdoor=*.
In my opinion, we still need a layer=* for overhangs of buildings, like arcades or roofs, respectively for features on top of buildings.

A situations where one of the tags is really useful are feature mounted on the wall like ​node/9819487704/history.

[skyper]

Replying to skyper:

I think both indoor=* and outdoor=* with identical values does not make sense.

Regarding the examples, we probably need a new tag for features which are partly indoor and partly outdoor.

[anonymous]

If indoor=yes means "completely indoors" and outdoor=yes means "completely outdoors" then something that is partly indoors (and partly outdoors) could be described with
indoor=no + outdoor=no
(not completely indoors and not completely outdoors).

indoor=yes + outdoor=yes used 65 times.
indoor=no + outdoor=no used 2 times.

[Klumbumbus]

Replying to anonym:

... then something that is partly indoors (and partly outdoors) could be described with
indoor=no + outdoor=no

That would be too confusing.