[OSM-talk] Tagging POI's - Nodes vs. areas

[Bryan Housel]

`amenity=hospital` is what makes it a proper hospital.  You can create a node where the hospital is, or an area around the property of the hospital.  Drawing either a node or an area is ok, but drawing areas is preferred if you have time for it.

If the hospital is just one building, you can add `building=yes` or `building=hospital` to the amenity.   If the hospital is a campus of several buildings, you can draw each building as well.  `building=*` (anything) should make it render like a building/structure.   The actual value of the building tag is not really used often (it’s considered a description of what the building looks like, not what it is), so most buildings are just tagged as `building=yes` unless they are really special somehow.

Thanks, Bryan




> On Apr 21, 2015, at 9:58 AM, EthnicFood IsGreat <ethnicfoodisgreat at gmail.com> wrote:
> 
> I want to know how to tag buildings which are also amenities or shops.  I have consulted the wiki and I cannot find a clear explanation of this.  Say you have a building which is a hospital.  One way to tag the polygon would be "building = hospital."  Another way would be "amenity = hospital."  Another way would be to simply tag the building as "building = yes" and then place a node inside the building polygon and tag the node as "amenity = hospital."  I'm thinking in terms of how the hospital will show up in the various renderers.  Do most renderers require the "amenity" tag in order to display a hospital symbol at that location?  (In other words, what happens if I just use the "building = hospital" tag on the polygon and no amenity tag?)  And what about the hospital name?  Do I include it with the building polygon or the node?  Or both?  This is very confusing.  It seems there is a certain amount of overlap when it comes to the application of building, amenity, and shop tags.
> 
> Mark Bradley
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