[Tagging] layer=-1, rivers, bridges and tunnels

Pieren pieren3 at gmail.com
Tue Apr 22 09:04:16 UTC 2014

On Mon, Apr 21, 2014 at 10:53 PM, Chris Hill <osm at raggedred.net> wrote:

> Layer tag is a *hint* to the renderer, nothing more. In the case of a river
> (or road) passing through a landuse area the renderer doesn't need a hint
> and to say the river is somehow below the landuse does not make sense.

Again, without a complementary tag like "tunnel" or "covered", you can
only speculate about the topology. QA tools report errors if two
features are crossing each other without these additional tags
(road/road, road/river, road/railway, etc... but not a river crossing
a landuse).


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