On Mon, Jan 28, 2008 at 05:57:24PM +0000, Tom Chance wrote: > I'm a bit confused about these tags: > > railway=viaduct > bridge=yes > cutting=yes > embankment=yes > > Why is it not a property like bridge, cutting etc. and will it render > correctly? Should it be changed to viaduct=yes?
Ewww, yuck... boolean flags. Personally I would tag as: railway=rail bridge=viaduct for cutting I would have thought more like (this is a suggestion, there is probably a better way): railway_level=-1 or railway_level=cutting and for embankment railway_level=1 or railway_level=embankment Map features has the really odd (IMO): railway=viaduct (node) highway=viaduct (node) with the comment of something like "A high or long bridge...". "long" and "node" don't go together as far as I am concerned ;-). You also don't know what type of railway goes over the viaduct, as you lose the railway= information. A possible, but slightly odd, example would be an underground train going above ground and over a viaduct - it would be railway=subway, bridge=viaduct. If memory is correct, I think the DLR does that in some places in London (railway=light_rail, bridge=viaduct)? Not sure what others do, though... Cheers, -- Matthew _______________________________________________ talk mailing list talk@openstreetmap.org http://lists.openstreetmap.org/cgi-bin/mailman/listinfo/talk
