[OSM-talk] Key:layer update

Richard Z. ricoz.osm at gmail.com
Sun Mar 9 12:24:56 UTC 2014

On Sun, Mar 09, 2014 at 11:35:20AM +0000, Dave F. wrote:
> On 09/03/2014 10:30, Richard Z. wrote:
> >Hi,
> >
> >for some time now I have been working on the wiki page to state the rules
> >as clearly as possible.. hope that most of the improvements are fairly
> >uncontroversial. Some of the changes:
> >
> >* the vertical ordering established by the layer values is valid exactly only
> >   in the point where the ways cross or objects overlap
> If you take that literally users will join rivers flowing under a
> bridge with a node & add the layer tag to it, which is incorrect:
> those ways should not join.

it says "point", not "node" the difference probably needs to be emphasized 
very strongly. There is a difference between mathematicaly precise and
intuitive formulations:((


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