Key:level
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Floor number of a feature
Used combinations in
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On a single small feature which might be found inside a building, this tag denotes on which floor the feature can be found.
For a highway, it probably denotes how the layers of a multi-level grade-separated junction stack together. But you should use layer=* for that instead if that's your intended use, it will have wider support. The values and meanings which are in common use seem similar. If I'm wrong with this description, please correct it - thanks!
Values
Numeric values
- level=0 ground floor
- level=1 floor over ground floor (British English: first floor, American English: second floor)
- level=-1 first basement floor
- level=-2 second basement floor
There is an ongoing discussion on usage of fractional values, e.g. level=0.5 or level=1.5 for mezzanine floors and staircases. See the proposals for more examples.
- Currently I would recommend to use the local naming conventions for mezzanine floors, for example Z for "Zwischengeschoss" in Germany. Also see next subsection. So fractional values should only be used vor staircases. An other option could be to introduce a totally new mapping for floor names to numbers, which hasn't to do anything with the local names. --Saerdnaer 12:42, 30 November 2011 (UTC)
String values
In some cases there are also strings used to describe levels. Look out for a relation which holds the order and description of these values.
Multiple values
level range: level=-1;0 room=yes is a room which goes over two levels. Often there are doors to each one.
Maps rendering this tag
- http://www.itoworld.com/map/22#lat=48.26236012787891&lon=11.668185447694173&zoom=18
- the level tag mainly renderd in this map to see it's incorrect usage on roads
See also
Related proposals
There are multiple proposals on usage of a level Tag (recent first):
