On 21/12/2010 20:17, Wyo wrote:
Craig Wallace wrote:
I think using disused=yes is a very bad idea.
It will break all of the existing renderers/applications that don't know
Here is a sample of a disused canal which doesn't break at all. I don't think it
would break with highways. If you use highway=disused you loose the information
what highway it was. E.g. a motorway or a path?
http://www.openstreetmap.org/?lat=47.79577&lon=7.40601&zoom=16&layers=M
There is a rule in the Mapnik stylesheet specifically for
waterway=canal, disused=yes.
There is no such rules for highways or anything else. So for example
something tagged as highway=motorway, disused=yes will still be rendered
as a normal motorway. Which means it does break things.
Yes, the Mapnik stylesheet could be changed to handle this for all
highway types, and all amenities, and all shops etc. But it would make
the stylesheets much more complicated.
This has been an open bug for over 2 years:
http://trac.openstreetmap.org/ticket/1085
And then there are hundreds of other applications using OSM data, which
would all need to be modified to fix this.
Also, I suggested tagging disused things as something like
highway:disused=motorway, then you don't lose information on what type
of highway it was.
Craig
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