[Tagging] How to tag a building constructed for a gastronomic purposes?
dieterdreist at gmail.com
Tue Sep 25 11:06:08 UTC 2018
2018-09-25 9:34 GMT+02:00 Tobias Zwick <osm at westnordost.de>:
> > the building=* tag helps define the rough purpose fo the building - but
> not the exact purpose. The pin or other tags on the building do that. And
> that building looks like it wants to sell food to tourists. ^_^
> Yes, true. Though I rather had something like building=gastronomic in
> mind, not building=restaurant.
the building tag describes the type of building. This is the solution for
the purpose that was intended for the building at time of construction.
While it often has to do with what is now in the building (because people
will search a building that is suitable for what they do), this is still
somehow orthogonal. Inside the building, you can add objects that describe
the current user (e.g. a school, a hairdresser, etc.), these can be nodes
or polygons. Mixing both is common (some poi tags + building=*/yes), but it
is really a shortcut, a kind of group, not a single entity (it is both, a
building and a user), and when you add more detail about either of them
(building or POI), you will usually do better separating them.
There is no need nor documentation nor practice to use very generic
building values (* in some fields where we generally still have a less
elaborated/refined tagging scheme, like industrial, it is admittedly
common) if you look at dwellings, a field that is common to everyone, we
use quite detailed values. I would argue the more specific you can become
(within reasonable limits, set by the general knowledge of interested
mappers, not experts), the better. Either you are interested in the
building type, then "residential" is too scarce, or you are not and the
landuse will usually be sufficient for you. We use building=train_station
and not building=transportation, because a train station is a specific
building type (although there are subtypes of course) people can recognize
and it provides the level information they are interested in.
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