[Tagging] Why is this building not rendered?

[Warin]

On 16-Apr-17 07:54 PM, Tom Pfeifer wrote:
> On 16.04.2017 07:11, Tom Hardy wrote:
>> http://www.openstreetmap.org/#map=18/44.95741/-93.36230 should show
>> a building=school (with amenity=school and other tags including an
>> incorrect addr:housenumber and addr:city).  The standard layer
>> doesn't show it but every other layer does, and it appears normal in
>> the ID editor.
>
> Seems you refer to this object, 
> http://www.openstreetmap.org/way/341791043/history
>
> When I first looked at the map, it was rendered correctly as building 
> and name; however refreshing the page made it disappear.
>
> So it looks like a glitch in Carto or in the rendering database. Do 
> not immediately recommend tagging changes for such reason.
>
> I have opened in ticket in Carto:
> https://github.com/gravitystorm/openstreetmap-carto/issues/2611
>
>> Clicking the the history button shows the area affected by a flurry
>> of large scale edits including by woodpeck_repair, though I can't
>> associate edits with specific objects on the main page.
>
> The object history has 4 versions, none if the edits is by by 
> woodpeck_repair.
>
> On 16.04.2017 07:40, Warin wrote:
> > I think tagging it both as a amenity=school and building=school has 
> confused things.
>
> no that should be fine. If an amenity fills a building, the amenity 
> tag can be on the building outline.
>
> > I would remove the amenity=school and place that on a node with the 
> name and address stuff.
>
> That would be a mapping regression, since the school fills the building.
> In the specific case it looks like the campus should be mapped.
>
> > The wiki http://wiki.openstreetmap.org/wiki/Tag:amenity%3Dschool 
> says to have
> > a single node
> > OR
> > a way that encompasses the entire site - including buildings, 
> parking, playgrounds...
>
> This is not what the wiki says. It says "Mark the boundary of the 
> school using an Area Area or place a Node Node in the middle of the 
> site" thus it does not exclude having the amenity on the building.
Direct and fuller quote from the wiki page I linked to above ..


      "/How to map/

/Mark the boundary of the school using an //Area 
<http://wiki.openstreetmap.org/wiki/Elements#Area_.28closed_way.29>////Area 
<http://wiki.openstreetmap.org/wiki/Area>//or place a //Node 
<http://wiki.openstreetmap.org/wiki/Node>////Node 
<http://wiki.openstreetmap.org/wiki/Elements#Node>//in the middle of the 
site if you are in a hurry (or don't have access to information about 
the boundary and it is not obvious from aerial imagery). /

/This area should envelop the full grounds of the school including all 
the buildings, sports facilities and grounds. //For schools with 
multiple sites the multipolygon 
<http://wiki.openstreetmap.org/wiki/Multipolygon> relation can be used."

/The playground to the west of the building looks to be part of the 
school going by its name.
And I would think the parking area to the east of the building is also 
part of the school.

However on the information available to me ... I could not reliably map 
the extent of the school .. so I would map it as a node only.
I think this is not regression but removes an assumption (from the 
present tagging) that the school is limited to the building alone.


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