Re: [Talk-gb-westmidlands] Hi

2009-03-19 Thread Andy Robinson (blackadder-lists)
Gareth,

Yes we do! :-) great to have you here.

You may have joined the list just after the announcement re the Black
Country mapping party on 4/5 April. See the list archive and the wiki page
for the event: 
http://wiki.openstreetmap.org/wiki/Mappa_Mercia/Black_Country

Cheers

Andy

-Original Message-
From: talk-gb-westmidlands-boun...@openstreetmap.org [mailto:talk-gb-
westmidlands-boun...@openstreetmap.org] On Behalf Of Gareth Walker
Sent: 19 March 2009 3:15 AM
To: talk-gb-westmidlands@openstreetmap.org
Subject: [Talk-gb-westmidlands] Hi

New here, been meaning to join for a couple of months.

Do you need any help mapping out Willenhall?

With best regards,

Gareth

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[Talk-GB] Clarifying tagging for footway/cycleway etc

2009-03-19 Thread Richard Mann
I’ve been trying to work out how OSM can be used to record and display the
cycle networks in Oxford. I can get most of the way with the standard
tagging in Map Features, but run up a few situations where the tagging
doesn’t fit the reality. One of these is the mishmash of tagging rules for
footways/cycleways/bridleways/paths.

I think what we need is a tagging approach that is simple enough to let
newbies tag clearly and reliably, and also simple enough to avoid needing
complicated deciphering by renderers. We don’t have that at the moment.

As a general principle, I think Key:highway should do most of the work. It
should concentrate on describing the physical nature of the way, both
because that’s fairly easy to agree on (and the established principle for
roads), and because it mostly tells map-users what they want to know. We
should leave the legal technicalities, and any unusual access restrictions
to subsidiary tags.

Path/footway/cycleway/bridleway/track isn’t really descriptive enough, and
come laden with assumptions about cycle access (in particular) that
currently need to be reviewed when tagging and rendering.

I think there’s a need for a highway=cyclefootway tag, for paths that it is
legal and practical to cycle on, but which are shared with pedestrians. This
leaves highway=cycleway for those paths where either pedestrians have a
separate path, or where there’s so much room that nobody’s fussed.

Separately from that, I would agree (picking up a discussion on the Talk
list), that there should be a
designation=footpath/bridleway/permissive_footpath etc tag, to record the
legal status where known (usually from a signpost). The main advantage of
this is that it avoids polluting the highway key (which is the main one that
renderers look at) with potentially misleading right-of-way info (eg
footpaths that no-one objects to being cycled on, mudbath bridleways that
you would be advised to avoid cycling on).

The access tags should be mainly for the routing software, and there to
correct the default assumptions generated by the highway tag. I would
suggest that the routing software should be assumed to ignore the
designation tag, because that’s the simplest approach – keeping the
different issues separate. I think the access=designated/permissive tags
should be deprecated and instead concentrate on things that are meaningful
for routing software, perhaps access=preferred/yes/discouraged/no.

I’d like feedback on two things:
1) highway=cyclefootway
2) divorcing the legal status from the highway tag

Richard Mann
Oxford
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Re: [Talk-GB] Clarifying tagging for footway/cycleway etc

2009-03-19 Thread Alex Mauer
Richard Mann wrote:
 Path/footway/cycleway/bridleway/track isn’t really descriptive enough, and
 come laden with assumptions about cycle access (in particular) that
 currently need to be reviewed when tagging and rendering.

highway=path has no such assumptions.

highway=track is totally irrelevant to the discussion (being for motor
vehicles), but also has no such assumptions.

 I’d like feedback on two things:
 1) highway=cyclefootway

It seems to me that this conflicts with your point 2.  If you want to
separate the legal access rights from the physical path description,
creating a new highway value which only has different access rights.

 2) divorcing the legal status from the highway tag

Sounds good to me.  Isn't this exactly what highway=path does, since it
doesn't carry any access implications?

-Alex Mauer hawke



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Re: [Talk-GB] Clarifying tagging for footway/cycleway etc

2009-03-19 Thread Shaun McDonald

On 19 Mar 2009, at 16:32, Ed Loach wrote:

 highway=path has no such assumptions.

 I'm not sure that any of the highway= values have assumed
 permissions. If you tag something as a footway in JOSM it defaults
 to adding both highway=footway and foot=yes (or at least I think it
 did in a recent build).

 So if you have a shared use cycle/footpath where the bicycle and
 people are above each other white on a blue sign I'd say that

I would say that sign should be tagged as highway=cycleway,  
cycleway=shared, foot=yes

 highway=cycleway, foot=designated, cycle=designated and
 highway=footway, foot=designated, cycle=designated are equivalent,
 and the only difference is in how they render. I tend to sway
 towards cycleway if they are part of a signposted cycle route, or if
 there is a preferred cycle route sign anywhere, or footway
 otherwise. For footpaths on housing estates I'll probably have
 highway=footway, foot=yes and also add cycle=no where there is a no
 cycling sign.


Personally I think that there should be a way to tag differently, you  
definitely cannot take your bike on this path, like many gardens, and  
you need to dismount to continue the next section (usually signified  
by a cyclists dismount sign. This is why I like to use the  
bicycle=dismount tag.

 I like the idea of designation= for distinguishing between these
 paths on housing estates and the signs which are signposted Public
 Footpath in England (and perhaps other UK nations) so if
 OpenFootMap ever takes off they could perhaps be rendered
 differently.


Shaun


 Ed



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Re: [Talk-GB] Clarifying tagging for footway/cycleway etc

2009-03-19 Thread Tom Hughes
Kevin Peat wrote:
 Richard Mann wrote:
 As a general principle, I think Key:highway should do most of the work. 
 It should concentrate on describing the physical nature of the way...
 
 +1 on this...I also think highway should just describe the physical way 
 so probably just:
 
 highway=path|track|road
 
 With the rest of the stuff split out:

Do you think that, just possibly, having to change the tagging on every 
single road in the database to implement your scheme might make it just 
a tad impractical...

Tom

-- 
Tom Hughes (t...@compton.nu)
http://www.compton.nu/

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Re: [Talk-GB] Clarifying tagging for footway/cycleway etc

2009-03-19 Thread Kevin Peat
Just an idea, practical doesn't come into it ;-

But if we've always done it that way wins out every time then the maps 
we produce probably aren't going to be as useful as they could be.

Kevin


Tom Hughes wrote:
 Kevin Peat wrote:
 Richard Mann wrote:
 As a general principle, I think Key:highway should do most of the 
 work. It should concentrate on describing the physical nature of the 
 way...

 +1 on this...I also think highway should just describe the physical 
 way so probably just:

 highway=path|track|road

 With the rest of the stuff split out:
 
 Do you think that, just possibly, having to change the tagging on every 
 single road in the database to implement your scheme might make it just 
 a tad impractical...
 
 Tom
 

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Re: [Talk-GB] Clarifying tagging for footway/cycleway etc

2009-03-19 Thread Simon Ward
On Thu, Mar 19, 2009 at 07:11:06PM +, Tom Hughes wrote:
 Do you think that, just possibly, having to change the tagging on every 
 single road in the database to implement your scheme might make it just 
 a tad impractical...

Oh, there are only 20‐odd million.  Piece of cake ;)

Simon
-- 
A complex system that works is invariably found to have evolved from a
simple system that works.—John Gall


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Re: [Talk-GB] Clarifying tagging for footway/cycleway etc

2009-03-19 Thread Alex Mauer
Simon Ward wrote:
 On Thu, Mar 19, 2009 at 07:11:06PM +, Tom Hughes wrote:
 Do you think that, just possibly, having to change the tagging on every 
 single road in the database to implement your scheme might make it just 
 a tad impractical...
 
 Oh, there are only 20‐odd million.  Piece of cake ;)

To be fair, it wouldn't really be that hard.  It's convincing those who
care, and then educating the mappers, that is the hard part.

-Alex Mauer hawke



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Re: [Talk-GB] Clarifying tagging for footway/cycleway etc

2009-03-19 Thread Jim Avery
2009/3/19 Alex Mauer ha...@hawkesnest.net:
 Simon Ward wrote:
 On Thu, Mar 19, 2009 at 07:11:06PM +, Tom Hughes wrote:
 Do you think that, just possibly, having to change the tagging on every
 single road in the database to implement your scheme might make it just
 a tad impractical...

 Oh, there are only 20‐odd million.  Piece of cake ;)

 To be fair, it wouldn't really be that hard.  It's convincing those who
 care, and then educating the mappers, that is the hard part.

 -Alex Mauer hawke

I care, but for the moment simply getting some roads and paths on the
map hereabouts takes priority.  Maybe in a year or so when the first
pass is done ...

Cheers,

Jim

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Re: [Talk-GB] Clarifying tagging for footway/cycleway etc

2009-03-19 Thread Richard Mann
I'm aware that there's a school of thought that says there should be a lot
fewer highway tags, with further details in other tags. Can we not rehearse
that debate (please).

I'm assuming the lower change option of keeping the diversity of tags (and
suggesting the addition of a new one between cycleway and footway) precisely
because renderers typically use this diversity. There is a definite
difference between a 2m wide path and a 4m wide path, and I think this is a
distinction that could sensibly be made.

In parallel, moving legal designations to a separate tag, would keep the
highway tag doing almost entirely physical stuff, on a rough-and-ready,
this-is-what-it's-good-for basis.

Richard
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