Everyone, A long standing question for osm mapping in cities is wether to tag amenities in multi-purpose buildings as: - a separate node inside the building's way - the building itself, using both building=house and amenity=* (only valid with single-amenity buildings) The node approach has consistency issues like these buildings: https://www.openstreetmap.org/node/656793551 .
The area approach is more consistent but doesn't really allow multi-purpose buildings. A third, lesser used method is to use part of the simple indoor tagging schema. I've used a simplified version of this for this restaurant: https://www.openstreetmap.org/way/580985564 . This approach uses two overlapping ways, one for the general building (tagged building=house) and one for the restaurant on the ground floor (tagged room=restaurant and of course amenity=restaurant). Drawbacks of this are for one that the two ways fully overlap. This triggers the JOSM validator and probably some QC tools. Secondly renderers might have trouble placing the icons and house numbers of multiple areas like this. Luckily both these problems could be fixed. The positives are of course: consistency and the possibility for multiple amenities (using the level=* key). What do you all think of this approach? Kind regards, Pieter (Ubipo)
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