Re: [Tagging] Route Relations and Special (Bannered) Routes

2012-03-14 Thread Phil! Gold
* Richard Weait rich...@weait.com [2012-03-13 10:30 -0400]:
 adding a tag for banner=Alternate/Business/Truck is my least-favourite
 option of those above.

Why?

 increasing specificity on the network tag like network=US:US:Alt
 follows the original intent of the network tag.  It also offers the
 least surprise to naive consumers of the data.

So you get the reverse questions from NE2.  };  We (so far) mostly use
the network tag as a hierarchy of ownership, not containment: the US:MD
network is for Maryland's roads and Maryland is in the US, but its roads
are not members of the US network.  Does it make sense to double up on
the meanings of network tags, so that, say, US:NJ:Business would be a
business route that's a member of the New Jersey state highway network,
but US:NJ:CR would be a county road that's not a member of the state
network?  Is it still easier for data consumers if they have to
differentiate between those two cases?

Compared to the scenario where we add a modifier tag for special routes,
data consumers already have to consider two tags to work with route
relations.  Would adding a third make a difference?

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Re: [Tagging] Route Relations and Special (Bannered) Routes

2012-03-13 Thread Phil! Gold
* Nathan Edgars II nerou...@gmail.com [2012-03-11 22:30 -0400]:
 It also makes the most sense to put it in the ref tag. Otherwise
 there's inconsistency between an alternate signed as US 1 Alternate
 and one signed as US 1A (with the suffix in the shield). In each
 case I'll also use the modifier tag (modifier=Alternate/A).

But US 1A and US 1 Alternate are signed quite differently.  From the
perspective of a driver on the road, the US 1 Alternate signing is much
more obviously a variant route of US 1.  (US 1A even has its/their own
page on Wikipedia, while the US 1 Alternates are listed with the other
special routes on the Bannered routes of US 1 page.  Not that Wikipedia
dictates our actions, but it's indicative of other people's thinking on
the matter.)

Note that I'm not strictly disagreeing with you.  I do personally like the
separate network, ref, modifier tagging approach a little more than the
others, but I also don't consider myself to have that extensive an
understanding of road networks, either in the US or worldwide.  I mostly
want to see what sort of community consensus there is here, so the data
consumer I'm working on will work in a reasonable way.  I'd hoped to have
feedback from several people, but since you're the only person who's
responded so far, you get all the questions.  :|

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Re: [Tagging] Route Relations and Special (Bannered) Routes

2012-03-13 Thread Richard Weait
On Sun, Mar 11, 2012 at 11:16 AM, Phil! Gold phi...@pobox.com wrote:
 I'd like to solicit some thoughts on the tagging for special routes
 (commonly known as bannered routes)[0].  In route relations, it's
 customary to separate the network and the reference number.  How do or
 should special routes fit into that?

 I'm torn between three views and I'm not sure which of them is the best
 fit for the way people think about special routes in a general sense.

 Let's consider one of US Route 1's alternate routes[1].  We can
 think of it as:

  * An independent route within the US Highway system whose reference
   number happens to be alphanumeric.
   network=US:US
   ref=1 Alternate  (but people might use ref=1 Alt, because that's what's
                     on some of the signs)

  * A route within the subset of the US Highway system consisting of
   alternate routes:
   network=US:US:Alternate
   ref=1

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  * A route related to the main US Route 1, but with an additional tag
   indicating that it's a bannered offshoot:
   network=US:US
   ref=1
   banner=Alternate

 I'm partial to the idea of separating the banner from the reference
 number, but I'm not sure how any of these ideas mesh with the
 understandings of people with more experience with road networks than I
 have.

 tagging@ is included because I'm not sure how global a practice this sort
 of thing is, even though it's quite common in the US.

  [0]: http://en.wikipedia.org/wiki/Special_route
  [1]: 
 http://en.wikipedia.org/wiki/Bannered_routes_of_U.S._Route_1#Alternate_routes

adding a tag for banner=Alternate/Business/Truck is my least-favourite
option of those above.

increasing specificity on the network tag like network=US:US:Alt
follows the original intent of the network tag.  It also offers the
least surprise to naive consumers of the data.

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[Tagging] Route Relations and Special (Bannered) Routes

2012-03-11 Thread Phil! Gold
I'd like to solicit some thoughts on the tagging for special routes
(commonly known as bannered routes)[0].  In route relations, it's
customary to separate the network and the reference number.  How do or
should special routes fit into that?

I'm torn between three views and I'm not sure which of them is the best
fit for the way people think about special routes in a general sense.

Let's consider one of US Route 1's alternate routes[1].  We can
think of it as:

 * An independent route within the US Highway system whose reference
   number happens to be alphanumeric.
   network=US:US
   ref=1 Alternate  (but people might use ref=1 Alt, because that's what's
 on some of the signs)

 * A route within the subset of the US Highway system consisting of
   alternate routes:
   network=US:US:Alternate
   ref=1

 * A route related to the main US Route 1, but with an additional tag
   indicating that it's a bannered offshoot:
   network=US:US
   ref=1
   banner=Alternate

I'm partial to the idea of separating the banner from the reference
number, but I'm not sure how any of these ideas mesh with the
understandings of people with more experience with road networks than I
have.

tagging@ is included because I'm not sure how global a practice this sort
of thing is, even though it's quite common in the US.

  [0]: http://en.wikipedia.org/wiki/Special_route
  [1]: 
http://en.wikipedia.org/wiki/Bannered_routes_of_U.S._Route_1#Alternate_routes

-- 
...computer contrarian of the first order... / http://aperiodic.net/phil/
PGP: 026A27F2  print: D200 5BDB FC4B B24A 9248  9F7A 4322 2D22 026A 27F2
--- --
Wow, I'm being shot at from both sides.  That means I *must* be right.
:-)
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 --- --

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Re: [Tagging] Route Relations and Special (Bannered) Routes

2012-03-11 Thread Nathan Edgars II
It's obvious to me that the banner is not part of the network. US 1 
Alternate is part of the U.S. Highway system (US:US), not some mythical 
U.S. Highway Alternate system.


It also makes the most sense to put it in the ref tag. Otherwise there's 
inconsistency between an alternate signed as US 1 Alternate and one 
signed as US 1A (with the suffix in the shield). In each case I'll also 
use the modifier tag (modifier=Alternate/A).


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