[OSM-talk] Key:layer update

Pieren pieren3 at gmail.com
Wed Mar 12 15:44:23 UTC 2014

On Wed, Mar 12, 2014 at 3:22 PM, Frank Little <frankosm at xs4all.nl> wrote:
> Richard Z wrote

> As mapped, the waterway=stream (Way #138911739) runs underground (layer=-1),
> probably through a culvert given the way the stream left and right are
> separately outlined as waterway=riverbank (and without layer=*). The way
> (stream) should be tagged as a culvert.
> Perhaps there is in reality a bridge not a culvert, in which case the road
> needs splitting and the appropriate new road segment tagged as bridge=yes.
> In either case, a layer tag is not needed for rendering.
Bridge or culvert, one way has to be split (the road for bridge or the
stream for culvert) to identify the structure and one of the ways
needs a tag layer. It's true that the shared node is wrong here
excepted if it's a ford. It needs a local survey.
Same mapping issues can be found between roads and railways, railways
and rivers, etc


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