On Sun, Aug 11, 2013 at 05:52:12PM -0500, John F. Eldredge wrote: > > > > Not to get too technical, but I believe that a 45 degree angle is > > equivalent to a 100% grade [1]
I suppose that I am being pedantic, but slope is surely a ratio. Or you can define the same thing via an angle \theta. Slope = tan(\theta). Maybe there should be two subtags, "slope" and "angle". Both are, of course, dimensionless. But if % appears, that immediately implies a slope rather than an angle, so slope = n% seems unambiguous. Of course, 200% is valid if unusual, not to say precipitous, but might seem odd at a quick glance. ael _______________________________________________ Tagging mailing list [email protected] http://lists.openstreetmap.org/listinfo/tagging
