Bill Ricker wrote:
On Wed, Jan 27, 2010 at 7:28 AM, Dave F. <[email protected]
<mailto:[email protected]>> wrote:
The wiki is not the finite answer. If it's lacking an item, add it, be
only if needed, and on the Newbies list, the answer should be Ask, not
Add, as in this case.
Not quite. The wiki is open to editing by everyone. Newbie's have to
decide if they are confident that what they want to add is correct. If
not then ask.
it aerial_path or Catwalk etc.
would likely be overly detailed if there's anything generally right
It was you who mentioned them! If it's the most accurate description for
the entity, then use them.
so viaduct could be used.
http://en.wikipedia.org/wiki/Viaduct
*Good point, a foot viaduct is what it is.*
But again you quote Wikipedia to choose OSM tags. OSM is not whole
language but a smaller tagging vocabulary for a database.
No I didn't. I never mentioned tags.
I'm using Wikipedia to convey the meaning of the relevant word(s), &
will continue to do so.
In OSM schema, it turns out Viaduct was rejected as a *tag* and
accepted as a *value*.
Again, not quite. It was obsoleted as a *key *tag & accepted as *value
*tag.
If you look further down that wiki page you'll see the XML attribute
names. are k & v.
http://wiki.openstreetmap.org/wiki/*Proposed*_features/*Viaduct*
*Status: Obsoleted
<http://wiki.openstreetmap.org/wiki/Category:Proposed_features_%22Obsoleted%22>
(inactive
<http://wiki.openstreetmap.org/wiki/Category:Inactive_features>)*
*This proposal has been obsoleted by the approved "Bridge
<http://wiki.openstreetmap.org/wiki/Proposed_features/Bridge>"
proposal.*
http://wiki.openstreetmap.org/wiki/*Bridge*
There is a single "bridge=<type>" tag:
*bridge*=yes
*bridge*=aqueduct
*bridge*=viaduct
*bridge*=swing
*bridge*=...
so i suggest
*
highway=footway, bridge=viaduct,*
+1
and at least in the WDW case where we will be adding footway and
service ways beneath,
* layer=1
*although* *the squirrels and hedgehogs won't have layer=0 paths to
conflict in the treetop case*, *there might be a ground level nature
trail as well.
It's my understanding that bridge has an implied tag of level=1. I only
add level=* when I have multiple bridges crossing each other.
Hmm... That reminds me; I need to add level tags to some power cable
where they cross an elevated road.
*
* (Why not tag with best word from wikipedia even if not otherwise
used in OSM? While we don't tag for one render, we also don't tag to
make the renderes' job impossible either; a custom tag usevid nowhere
else will NEVER render unless the author provides patches to each
renderer, and other database uses won't know what to make of it either.)
To reiterate, I'm using Wiki to clarify the understanding of the meaning.
Renderers can use the bridge=* for a catch all scenario. If they then
want to differentiate between the *different *types for their maps, then
they can.
Cheers
Dave F.
--
Bill
[email protected] <mailto:[email protected]> [email protected]
<mailto:[email protected]>
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