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

Richard Z. ricoz.osm at gmail.com
Sat Mar 15 10:46:21 UTC 2014

On Sat, Mar 15, 2014 at 01:24:07AM +0200, Ilpo Järvinen wrote:
> On Sat, 15 Mar 2014, Richard Z. wrote:

> > > Therefore, everyone needs now to handle those hardly useful layer 
> > > warnings about trivial cases (and waste their time on "correcting" them). 
> > 
> > even worse, people just apply layer=-1 to thousands of miles of rivers and
> > similar tricks to hide those warnings.
> Which proves my point. The mappers didn't like the unnecessary burden
> nor the warnings which do in no way improve quality but only reduce 
> signal-to-noise of the validator.

I am in favor of having the warnings fully configurable. Obviously if you
do not know an area well you can't decide whether a waterway crossing should 
be a bridge, culvert or a ford and should not be bothered with such warnings.
And I am thinking this warning should be off by default because it is one
of the most frequently useless warnings that I know.

File tickets for the JOSM validator whenever you think the validator could 
be improved or otherwise fine tuned.

Other warnings otoh should be added. There are many instances of tunnel=culvert
without a layer and almost all of them were accidental errors - someone added
the culvert to the wrong segment of the way.

As of the bridges, the editing software could make it a lot easier to create 
them. Currently its quite many manual steps to insert a bridge properly and 
I think there would be a demand to have a plugin or whatever doing it easier.


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