Hi Brian,
thanks for the response. The issue by itself actually is not that
complex at all: I've just started further amenity mapping / fixing some
details with the facilities at Frankfurt Airport (FRA). On the current
view at
http://www.openstreetmap.org/?lat=50.05069&lon=8.57046&zoom=17&layers=M
you essentially look at (from bottom) Terminal 1, the Frankfurt Airport
(Conference) Centre and the long distance train station / office centre
"The Squaire" at the AIRail-Terminal.
To ease navigation for passengers and visitors, the operator Fraport,
right from the early days, introduced a unified level-/floor-counting
system, which matches across all buildings and facilities (i.e.
departures is *always* on level 2 – no matter, if there even exists a
level 1 at all with the respective building…).
Though, unfortunately for our mapping efforts ;-) , they start counting
at 0 (zero) one level below ground already, which for them is where the
"airport" starts – and which in turn is right *above* their level -1,
which contains the underground suburban-train station (which is operated
by German Railways Deutsche Bahn) an thus does not qualify as
"part-of-the-airport" in their sense.
This tradition to count the floors of course collides with OSM standards
by the means, that it's always "one behind" – since OSM counting
*always* starts with zero as well, though OSM is *always* being counted
from ground/street level *and not* from the one beneath.
http://wiki.openstreetmap.org/wiki/Key:level
Now, my question was, how to properly map the airport buildings in a
way, which qualifies for indoor navigation (i.e. automatically displays
correct floor information to the users in a way, which is reliably
matching the labelling used at the airport *and at the same time*
ensures proper rendering with OSM clients, to whom "ground floor", level
zero, of course is *not beneath, but AT ground level*.
Ideas / best practices anyone? Is there such thing as a level_name ?
Help is highly appreciated!!
Am 10.02.2013 11:08, schrieb Bardo Nelgen:
Hi all,
with some huge buildings (like in this case a large Airport) a
different type of level-counting (starts with 0 at OSM -1) is used by
the operator, than is with OSM.
Which one am I supposed to use now?
The OSM conventions (and risk deployer-confusion on display) or the
local one (putting proper OSM rendering at risk).
Or is there an agreed-upon way to satisfy both?
Thanks in advance for any input on the issue.
Best,
Bardo
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