[talk-ch] Map consistency - private floating islands

marc marc marc_marc_irc at hotmail.com
Mon Jul 23 00:59:01 CEST 2018

I suppose that at least one "ending" node of the path is a 
door/entrance/exit like maybe this one
it's maybe enough for a QA tool and for routing to :
- connect this node to the building outer
- add entrance and or door tag

the main issue is the lack of street imagery or the need of a survey.

Of course indoor mapping to connect this highway is better
but it also need a survey or a local knowledge.

Le 07. 07. 18 à 11:24, michael spreng a écrit :
> Hi Kai
> You can model ways through buildings quite normally. I don't think you
> should add tunnel=yes, but indoor=yes or if it is a passage, you can use
> tunnel=building_passage
> https://wiki.openstreetmap.org/wiki/Key:tunnel#tunnel.3Dbuilding_passage
> and of course add the appropriate access tags if it is private.
> For publicly accessible parks (with or without a fee) the entrance
> through a house should be modelled. But for private stuff like your
> example, don't hesitate to mark it as a false positive and move on.
> There is no need, nor is it possible, to map all the private property
> details.
> Michael
> On 07/07/18 10:50, Kai Pankrath wrote:
>> Hi all,
>> I am working on the map quality using https://www.keepright.at (as well
>> as http://tools.geofabrik.de/osmi/) and encountered the “floating
>> island” problem (ways not connected to the rest of the map). I came
>> across one specific situation and can think of another:
>>   1. The way is in a private garden and the only access would be
>>      “through” the house (physical entering through the main entrance and
>>      potentially entering a garden through a terrace door) like here:
>>      https://www.keepright.at/report_map.php?zoom=19&lat=47.55724&lon=7.6253&layers=B0T&ch=0%2C130&show_ign=0&show_tmpign=0
>>   2. I have not found a good example, but you can think of a park with
>>      limited access and entrance as well as exit are only possible
>>      through the building (e.g. a castle or museum where you pay a fee to
>>      access other areas).
>> Basic question: How to map that? I see one option for private ways: I
>> would simply add “access=private” and any consistency checker could pick
>> that up in the future ignoring “private” islands. For more public-like
>> situations I am not so sure. Adding a highway=footway/tunnel=yes
>> (+layer?) through the building? Adding properties at the end points of
>> the way networks similar to amenity=parking_entrance (+creating a
>> relation between these points)? Any suggestions?
>> Regards,
>> Kai
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