[OSM-talk] Ditches

John Smith deltafoxtrot256 at gmail.com
Tue Dec 15 12:36:36 GMT 2009

2009/12/15 Steve Bennett <stevagewp at gmail.com>:
> IMHO, tagging "layer=1 bridge=yes" for a road going over water is an
> example of a hack, and "tagging for the renderer". The information
> "bridge=1" is more than enough to render with, so "layer=1" can *only*
> be interpreted as giving a renderer a crutch.

Without layer information you'd be guessing if the road goes over the
water or the water goes over the road, or the water and road are at
the same level.

You could come up with sane defaults, but that's making assumptions
rather than tagging explicitly so you know beyond a reasonable doubt.

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