[Talk-GB] Grouping related buildings in a relation

[Graham Stewart]

Thanks Jerry,

I've found the trouble with using areas is that sometimes the
related buildings aren't within an easily definable area and may
be spread across a few different streets with other buildings
between them.

This seems very common with large teaching hospitals or
university buildings. That's why I was tending towards a relation
- and because that's what the wiki said obviously :)

Thanks for the tip on multipolygon, I hadn't considered that.

GrahamS




On Fri, 28 May 2010 10:51 +0000, "Jerry Clough - OSM"
<sk53_osm at yahoo.co.uk> wrote:

Hi Graham,
I usually draw an area for the hospital campus and then mark
individual buildings=yes, rather than using a relation. (This may
stem from what I found to work when I started out).
In the relation I don't think you need the building=yes, but you
probably do need something like type=multipolygon.
Cheers,
Jerry
  ____________________________________________________________

From: Graham Stewart <graham at dalmuti.net>
To: OpenStreetMap TalkGB <talk-gb at openstreetmap.org>
Sent: Fri, 28 May, 2010 11:29:44
Subject: [Talk-GB] Grouping related buildings in a relation
What is the correct way to group a collection of buildings into a
relation when they are all part of the same institution?
I traced (from OS StreetView) the seven buildings of the Queen
Elizabeth
Hospital in Gateshead:
[1]http://www.openstreetmap.org/?lat=54.93834&lon=-1.57941&zoom=1
7&layers=B000FTF
I've tagged each building as building=yes and placed them in the
relation.
Then I tagged the relation as
amenity=hospital+building=yes+name=Queen
Elizabeth Hospital
But now Mapnik and Osmarender don't display a name or the
hospital POI
icon, which rather defeats the purpose.
What is the usual approach to this?
The Wiki for amenity=hospital suggests:
"If you have a large hospital campus with multiple buildings,
consider
combining them into a relation instead of tagging each individual
building to be a hospital"
-- [2]http://wiki.openstreetmap.org/wiki/Tag:amenity%3Dhospital
..which I thought was what I had done. Should I also add a POI
node with
amenity=hospital somewhere amongst the buildings? That seems a
bit
redundant.
Thanks,
GrahamS
PS I'm a new OSMer, so apologies if this is really obvious.
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References

1. http://www.openstreetmap.org/?lat=54.93834&lon=-1.57941&zoom=17&layers=B000FTF
2. http://wiki.openstreetmap.org/wiki/Tag:amenity%3Dhospital
3. mailto:Talk-GB at openstreetmap.org
4. http://lists.openstreetmap.org/listinfo/talk-gb
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