2008/8/20 Gervase Markham <[EMAIL PROTECTED]>: > I think that both waterways and roads are layer 0, "the ground", and > when one crosses another, the upper one should have layer=1 - because > there's air between it and the actual surface of the earth. I would > apply this to any ground-based physical features, not just roads and rivers.
That articulates my view pretty well. Once again, consider that "layer" isn't the same as "level". We don't care whether a bridge rises up above the "level" of the road either side of it. The important thing is that at the point where it crosses the river, the road must be on a higher "layer" than the river. So along the length of a way, it is acceptable (and unavoidable) to have "jumps" in layer that may not reflect actual changes in elevation. Layers exist to determine the drawing order of overlapping elements, nothing more. Dermot -- -------------------------------------- Iren sind menschlich _______________________________________________ josm-dev mailing list [email protected] http://lists.openstreetmap.org/listinfo/josm-dev
