Re: [Talk-GB] PRoW Ref tagging when ROW is also a road

2012-06-20 Thread David Groom



- Original Message - 
From: Gregory nomoregra...@googlemail.com

To: Richard Fairhurst rich...@systemed.net
Cc: talk-gb@openstreetmap.org
Sent: Tuesday, June 19, 2012 2:11 PM
Subject: Re: [Talk-GB] PRoW Ref tagging when ROW is also a road



On 19 June 2012 14:07, Richard Fairhurst rich...@systemed.net wrote:


David Groom wrote:
 However at the north end there is a (newly erected) public footpath
 sign showing a footpath ref of B64, pointing straight down this road,
 and the definitive map shows this as a footpath.

I use admin:ref for refs that are predominantly intended for
administrative usage, rather than public-facing usage.


Now that sounds like tagging for the renderer.

The problem in the stated case, is that there is potentially a footpath 
ref

and a road ref.
I would want to suggest something like footpath:ref=B64 or prow:ref=B64,
but I don't think either is used or documented anywhere.



Thanks everyone for the comments

I like the idea of prow:ref. I think footpath:ref a bit too specific, we'd 
then need bridleway:ref, not to mention boat:ref (for byways open to all 
traffic) which could be just TOO confusing!


I've also found one instance of  where the problem mentioned by Andy, of a 
way needing both a road ref and a prow ref, see 
http://www.openstreetmap.org/browse/way/28919456 which currently is tagged 
ref = A49;Cuddington FP 24


Certainly here on the Isle of Wight, I think the use of the reference number 
has gone beyond just administrative purposes.  A large majority of the 
footpath/bridleway signs have the ref on them (and I think all the more 
recent ones do).  Walking guides and trail leaflets commonly refer to paths 
by using their reference number.


In the UK at present there seem to be 7,004 ways tagged with designation =* 
and ref = *, of which 941 are on the Isle of Wight. I'd be quite confident 
about changing the relevant Isle Of Wight ways to prow:ref , but would not 
want to mass change all the UK ones.


It would be good to hear comments from user mikh43, and Robert Whittaker, as 
the three of us account for 80% of the users who last edited those 7004 ways


Regards

David



Gregory
o...@livingwithdragons.com
http://www.livingwithdragons.com








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Re: [Talk-GB] PRoW Ref tagging when ROW is also a road

2012-06-20 Thread Robert Whittaker (OSM)
On 20 June 2012 12:44, David Groom revi...@pacific-rim.net wrote:
 I like the idea of prow:ref. I think footpath:ref a bit too specific, we'd
 then need bridleway:ref, not to mention boat:ref (for byways open to all
 traffic) which could be just TOO confusing!
[snip]
 In the UK at present there seem to be 7,004 ways tagged with designation =*
 and ref = *,
[snip]
 It would be good to hear comments from user mikh43, and Robert Whittaker, as
 the three of us account for 80% of the users who last edited those 7004 ways

If we decide that we need to have a key other than ref for PRoW
numbers, then prow:ref seems to me be the best option from anything
that's I've seen suggested here. And I can't think of anything better
myself.

Given that there is a potential clash with road reference numbers
(which rightly should take priority) and there are definitely cases
where this arises, then perhaps it would indeed be better to use a
different key for the footpath etc numbers.

If we do make a decision to go with prow:ref, then I think we should
try to bulk change the existing uses of ref for PRoW numbers. It would
probably be relatively easy to semi-manually review all 7,000 uses of
a ref value on a way with a designation. For example, we should be
safe with any values that contain only letters and numbers (so is
unlikely to be a combination of two different refs separated by ; or
/) and ends in FP n, BR n, RB n or BY n where n is any
number (so looks like a PRoW number). This will probably cover any
that I've added, and I'd be happy for them to be changed
automatically. If there were any other common formats, we could
probably match them too, and then only have to manually review the
much smaller number that's left.

Robert.

-- 
Robert Whittaker

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Re: [Talk-GB] England Cycling Data project: DfT cycling data now available for merging

2012-06-20 Thread Graham Stewart (GrahamS)
Merging this data I see that some ways that just lead to an NCN route (but
are not actually part of the continuous route) are still marked with the
ncn=yes;ncn_ref=xx tags for the route the lead to.

What's the feeling on this? I'm a bit torn:

- On the one hand they are not the route, as in the signed route that goes
from A to B. They are simply access ways leading to the route. Including
them in the route could be misleading.

- But on the other hand, the on the ground situation is that roads/paths
near NCN routes often have signs pointing towards the route and these seem
(to me) to be indistinguishable from the signs along the route.



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Re: [Talk-GB] England Cycling Data project: DfT cycling data now available for merging

2012-06-20 Thread David Earl

On 20/06/2012 14:57, Graham Stewart (GrahamS) wrote:

Merging this data I see that some ways that just lead to an NCN route (but
are not actually part of the continuous route) are still marked with the
ncn=yes;ncn_ref=xx tags for the route the lead to.

What's the feeling on this? I'm a bit torn:

- On the one hand they are not the route, as in the signed route that goes
from A to B. They are simply access ways leading to the route. Including
them in the route could be misleading.

- But on the other hand, the on the ground situation is that roads/paths
near NCN routes often have signs pointing towards the route and these seem
(to me) to be indistinguishable from the signs along the route.


I don't know about elsewhere in the country, but in Cambridgeshire the 
council has used the parenthesis convention on such signs: the ncn ref 
in the red block with brackets round it:

  http://www.cyclestreets.net/location/29870/cyclestreets29870.jpg

I think we could do well to do the same in the ncn_ref tag.

David



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Re: [Talk-GB] England Cycling Data project: DfT cycling data now available for merging

2012-06-20 Thread Richard Mann
The people who collected the data tell me that the cycle lane widths were
recorded in 3 categories:
1) 1.5m
2) 1.5=x2
3) =2

So the values in the data (1.25 and 1.75 mostly) are spuriously accurate
and quite often overstated.

Richard
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Re: [Talk-GB] England Cycling Data project: DfT cycling data now available for merging

2012-06-20 Thread Graham Stewart (GrahamS)

David Earl wrote
 
 I don't know about elsewhere in the country, but in Cambridgeshire the
 council has used the parenthesis convention on such signs
 

That would be sensible. I think Newcastle Council must have run out of
parenthesis :)


David Earl wrote
 I think we could do well to do the same in the ncn_ref tag.

Hmm... would make a degree of sense - but as noted earlier, most NCNs (and
other routes) are stored as relations. 

I guess that ways signed as leading to an NCN could still use ncn_ref=(xx),
but we'd probably want to carefully note this approach somewhere on the wiki
(probably http://wiki.openstreetmap.org/wiki/Cycle_routes )



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Re: [Talk-GB] England Cycling Data project: DfT cycling data now available for merging

2012-06-20 Thread Andy Allan
On 20 June 2012 15:11, Richard Mann richard.mann.westoxf...@gmail.com wrote:
 The people who collected the data tell me that the cycle lane widths were
 recorded in 3 categories:
 1) 1.5m
 2) 1.5=x2
 3) =2

 So the values in the data (1.25 and 1.75 mostly) are spuriously accurate and
 quite often overstated.

That's true, and that's why I arranged to have these widths in the
est_width tag rather than the width tag. For the curious, here's
the numbers across the database:

 est_width | count
---+---
 0 | 6
 1 | 9
 1.25  |  9505
 1.5   | 4
 1.75  | 25209
 2 |18
 2.5   | 27090
 3 | 2
 4 | 3
 6.5   | 1

If there's any other questions regarding the data, feel free to ask!

Cheers,
Andy

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Re: [Talk-GB] England Cycling Data project: DfT cycling data now available for merging

2012-06-20 Thread Andy Allan
On 20 June 2012 15:21, Graham Stewart (GrahamS) gra...@dalmuti.net wrote:

 David Earl wrote

 I don't know about elsewhere in the country, but in Cambridgeshire the
 council has used the parenthesis convention on such signs

 I guess that ways signed as leading to an NCN could still use ncn_ref=(xx),
 but we'd probably want to carefully note this approach somewhere on the wiki
 (probably http://wiki.openstreetmap.org/wiki/Cycle_routes )

For the link routes as they are known within Sustrans, they should
indeed have brackets around the ref on the signpost. They can go into
OSM as route relations in themselves, e.g.

http://www.openstreetmap.org/browse/relation/1920622

Cheers,
Andy

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Re: [Talk-GB] England Cycling Data project: DfT cycling data now available for merging

2012-06-20 Thread Andy Allan
On 18 June 2012 12:05, Ed Loach e...@loach.me.uk wrote:
 One last comment for now.

 When looking at a project page, such as:
 http://gravitystorm.dev.openstreetmap.org/cnxc-snapshot/projects/78/
 tagged_ways
 It would be good to have a link to edit a relevant area, or failing
 that at least a latitude/longitude so you can find the way.

I've just added a stack of functionality to the site, so now you can
see maps showing where the features are, along with the coordinates.
It's not perfect, but it works!

Feedback welcome, and/or patches for the technically minded. See
https://github.com/gravitystorm/snapshot-server

Cheers,
Andy

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Re: [Talk-GB] England Cycling Data project: DfT cycling data now available for merging

2012-06-20 Thread Andy Allan
On 18 June 2012 10:11, Ed Loach e...@loach.me.uk wrote:
 Are there any notes I'm missing about how to access and deal with
 nodes in the DfT data? e.g.
 http://www.flickr.com/photos/edloach/7392860104/in/photostream

Nope, you're not missing anything - it simply appears to be broken.
I'm investigating what's going on.

It should, of course, just work(tm) in the same way as for ways.

Cheers,
Andy

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Re: [Talk-GB] England Cycling Data project: DfT cycling data now available for merging

2012-06-20 Thread Andy Robinson
David Earl [mailto:da...@frankieandshadow.com] wrote:
 Sent: 20 June 2012 15:05
 To: Graham Stewart (GrahamS)
 Cc: talk-gb@openstreetmap.org
 Subject: Re: [Talk-GB] England Cycling Data project: DfT cycling data now
 available for merging
 
 On 20/06/2012 14:57, Graham Stewart (GrahamS) wrote:
  Merging this data I see that some ways that just lead to an NCN route
  (but are not actually part of the continuous route) are still marked
  with the ncn=yes;ncn_ref=xx tags for the route the lead to.
 
  What's the feeling on this? I'm a bit torn:
 
  - On the one hand they are not the route, as in the signed route
  that goes from A to B. They are simply access ways leading to the
  route. Including them in the route could be misleading.
 
  - But on the other hand, the on the ground situation is that
  roads/paths near NCN routes often have signs pointing towards the
  route and these seem (to me) to be indistinguishable from the signs
along
 the route.
 
 I don't know about elsewhere in the country, but in Cambridgeshire the
 council has used the parenthesis convention on such signs: the ncn ref in
the
 red block with brackets round it:
http://www.cyclestreets.net/location/29870/cyclestreets29870.jpg
 
 I think we could do well to do the same in the ncn_ref tag.
 

That's how I'm tagging. The bracketed NCN number is a relatively new thing
from Sustrans. Basically any route to or deprecated braid should have a
bracketed number, though in many locations this may not have happened yet.
The number alone without brackets should only be used along the primary NCN
route itself.

Cheers
Andy


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Re: [Talk-GB] England Cycling Data project: DfT cycling data now available for merging

2012-06-20 Thread Graham Stewart (GrahamS)
Thanks both Andys :)

As an example of somewhere this hasn't happened look at the current mapping
around St Peter's Basin in Newcastle. It shows and extra spur of the NCN72
along Bottlehouse Street, but actually the NCN72 runs along a parallel road
to the north (Saint Lawrence Street).
http://www.openstreetmap.org/?lat=54.96592lon=-1.57369zoom=17layers=C

I suspect the original mapper was misled by the NCN signs in Bottlehouse
Street, which don't have brackets on them.

I'll survey it sometime soon and fix it as suggested.

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Re: [Talk-GB] England Cycling Data project: DfT cycling data now available for merging

2012-06-20 Thread Richard Fairhurst
Andy Robinson wrote:
 Basically any route to or deprecated braid should have a
 bracketed number, though in many locations this may not have 
 happened yet.

There's a slight tagging ambiguity when a link route connects two numbered
routes, of course: often these will be signed as, say, '(5)' in one
direction but '(51)' in the other. For the example in my group's 'patch', I
chose to switch over the tagging at the railway station roughly halfway:
http://osm.org/go/eutSPzu?layers=C

cheers
Richard



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Re: [Talk-GB] England Cycling Data project: DfT cycling data now available for merging

2012-06-20 Thread Kev js1982
Sorry Richard for spamming you - one day I'll remember this replies to the
person rather than the group by default - argh!

On 20 June 2012 15:11, Richard Mann richard.mann.westoxf...@gmail.com
wrote:

 The people who collected the data tell me that the cycle lane widths were
 recorded in 3 categories:
 1) 1.5m
 2) 1.5=x2
 3) =2

 So the values in the data (1.25 and 1.75 mostly) are spuriously accurate
 and quite often overstated.


Ah Ha, that explains why many of the 1.25m ones seam very generous - more
like 0.6m on the ground (with a wall to one side and water to the other)
for about half a dozen of them!

*On 20 June 2012 15:21, Graham Stewart (GrahamS) gra...@dalmuti.net wrote:
*
*For the link routes as they are known within Sustrans, they should
indeed have brackets around the ref on the signpost. They can go into
OSM as route relations in themselves, e.g.*


I've a few LCN's called (6) to change to NCN's then!
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Re: [Talk-GB] England Cycling Data project: DfT cycling data now available for merging

2012-06-20 Thread Tom Chance
On 18 June 2012 10:11, Ed Loach e...@loach.me.uk wrote:

 Are there any notes I'm missing about how to access and deal with
 nodes in the DfT data? e.g.
 http://www.flickr.com/photos/edloach/7392860104/in/photostream


Did this get an answer? I've tried, and failed, to click on the underlying
DfT vector for this node:
http://gravitystorm.dev.openstreetmap.org/cnxc-snapshot/projects/40/nodes/266169

I can select the OSM node, but not the DfT vector in order to merge/mark
complete.

Any hints much appreciated!

Tom

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Re: [Talk-GB] England Cycling Data project: DfT cycling data now available for merging

2012-06-20 Thread Kev js1982
One thing I have noticed with the data is that in a number of places the
DfT data claims there is an LCN on a major road which I know has no LCN
signage (except the odd crossing) - e.g. London Road - or claims that both
the main carriageway AND the adjacent cycleway (well footpath with some
wobbly painted lines) are LCN - the most obvious being here on the ring
road
http://gravitystorm.dev.openstreetmap.org/cnxc-app/editor.html?lat=52.99199lon=-1.14147-
i.e. both the cyclepaths on either side of the 40mph ring road are
marked
as being in the LCN (which tallies with the on the ground situation) but
also the main 40mph carriageway (well actually a single line in the DfT
data) which has no on the ground signs or even things like ASLs - in these
cases is the road really supposed to be marked as LCN?

Where it's on a residential road but unsigned on the ground I've been
adding it in (most of these fill in the various missing links you get
from surveying the signs) but on these major roads I've left it incomplete
for the time being.

Also, does anyone know when the OpenCycleMap data is last from (is there a
page showing this?) - I notice that stuff I added LCN tags to on the 9th
still hasn't been rendered dispite the tiles being updated on the 18th and
currently marked as clean?
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