On 09.03.2014 13:17, Dave F. wrote: > On 09/03/2014 12:03, Martin Koppenhoefer wrote: >> it has implications on real world topology: it says which object is >> above and which below when they cross, it is not only for rendering > > Disagree. A bridge at the top of Everest would be tagged 'layer=1' > exactly as it would be if in Death Valley (86m below sea level)
True, but that because layer models *relative* real-world elevation *locally* (between vertically stacked objects), rather than globally. Your statement points out that the layer relationship is neither global nor representative of absolute elevation, but that was never contested. Tobias _______________________________________________ talk mailing list [email protected] https://lists.openstreetmap.org/listinfo/talk
