[Tagging] Duplication of POI-data

[Tobias Johansson]

I just read the site relation page
http://wiki.openstreetmap.org/wiki/Relations/Proposed/Site . And as I
see it it states clearly "However, this relation is not to be used in
simple cases. If all the elements contained within an area (the
perimeter) belong to the site, and no elements of the site exist
outside the area, then it is inappropriate to use this relation.
Simply tag the perimeter with all the appropriate tags, and
implementations can perform an is-in-polygon test to determine what
elements belong to the site." And I the cases I have seen there area
is a simple area that includes the terminal/clubhouses and so on..

2013/1/25 Paul Johnson <baloo at ursamundi.org>:
> It's not as tricky as it sounds.  For an airport, I'd tag the perimeter as
> whatever the imported node was originally, make that the perimeter member of
> a site relation.  Everything mapped within the airport would have their
> appropriate names (if they have a name that differs from the airport) and
> add it to the site relationship.  Plus makes it easier to go back and pull
> everything that belongs to that site later.  Discovered site relations
> recently mapping the RV park I'm living in now, trying to find a way to
> group objects that belong together as a single, but relatively vast,
> location.
>
>
> On Fri, Jan 25, 2013 at 10:43 AM, Tobias Johansson <tj at mensa.se> wrote:
>>
>> Yes maybee, but I dont really see any need for a relation (but I don't
>> oposse it).
>>
>> 2013/1/25 Paul Johnson <baloo at ursamundi.org>:
>> > This sounds like a job for a relation type=site
>> >
>> >
>> > On Fri, Jan 25, 2013 at 10:31 AM, Tobias Johansson <tj at mensa.se> wrote:
>> >>
>> >> Hello
>> >>
>> >> I have an issue that may already have been discussed but I can't
>> >> remember that I have ever seen it. That is the duplication of poi-data
>> >> for certain features. There are two features I'm aware of that often
>> >> are duplicated. One is the aeroway=aerodrome and the other is
>> >> leisure=golf_course . In both of these cases the centerpoint of a
>> >> polygon-poi could be considerd "incorrect" for the placement of a
>> >> renderd label, therefore It's seems rather common to add a node with
>> >> same (not always the same name..) tags on the main terminal building
>> >> or the clubhouse for the respective poi's. I also konw that I read a
>> >> long time ago somewhere on the wiki that this was not only common but
>> >> correct for aerodromes (could not find it now..)?
>> >> I find this practice wrong because it's unneccesary duplication of
>> >> data. If you want to render a map with labels that way why not render
>> >> the name from the aeroway=aerodrome where the one of the
>> >> aeroway=terminal is? Maybee we could use a building=clubhouse tag for
>> >> golfcourses (and other places with clubhouses aswell ofcourse ;) )?
>> >>
>> >> Best Regards Tobias
>> >>
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