Re: [Talk-gb-westmidlands] New BING imagery

2013-03-01 Thread Rob Nickerson
Thanks for letting us know.

Based on the progress of the Coventry public realm improvements and this
cross-reference photo [1], I would date the imagery as circa 27th March
2012.

In Coventry, as with the previous imagery, there may be a small offset. If
you use Ordnance Survey data released under an open licence as a
cross-reference, a offset of about -2.05; -1.67 is required (+- 1 as its
very difficult to get a good offset)

Regards,
Rob

[1]
http://www.flickr.com/photos/coventrycc/6877675866/in/set-72157628026533825

p.s. A quick look shows that we have done a fantastic job of mapping new
buildings with the old imagery!!




On 1 March 2013 12:51, Andy Robinson ajrli...@gmail.com wrote:

 Bing have released new Ortho data circling Brum.

 Bing Maps World Tour[1] and check the Selected Releases  and then select
 the Aerial-Global Ortho Feb 2013. Basically goes west to the welsh border
 and east to connect with previous data. The area not covered is Birmingham
 and north up to Stafford and south to Worcester. Coventry is new.

 Note though that this new stuff is not available at the highest zoom. Turn
 off auto zoom in JOSM to stop the old data appearing at highest zoom.

 Cheers
 Andy

 [1]

 http://www.bing.com/maps/?form=MPSRCHcp=0~0lvl=2style=aapp=50493~myappna
 me~worldtour
 (needs Silverlight)


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Re: [Talk-gb-westmidlands] New BING imagery

2013-03-01 Thread Philip Barnes
On Fri, 2013-03-01 at 17:25 +, Rob Nickerson wrote:
 Thanks for letting us know.
 
 Based on the progress of the Coventry public realm improvements and
 this cross-reference photo [1], I would date the imagery as circa 27th
 March 2012.
 
I am in North Shropshire, it certainly looks like this area was done in
summer 2012. Wem town square is now on the imagery, looks great. Can do
some improvements with this. The imagery is alignment with the old
imagery varies across the town slightly different, will have a bike ride
around with GPS to ensure I have the correct alignment before I start
nudging things.

The imagery clearly changes at the Welsh border in this part of the
world. Still excellent resolution but a different tint. 

Phil (trigpoint)



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Re: [Talk-GB] Dartmoor needs fixing (heath area missing a chunk)

2013-03-01 Thread Kevin Peat
On 28 Feb 2013 23:08, SomeoneElse li...@mail.atownsend.org.uk wrote:

 ...looks excellent as a get away from it all destination...

Bring some good boots as it's pretty muddy after 6 months of rain.

Kevin
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Re: [Talk-GB] Dartmoor needs fixing (heath area missing a chunk)

2013-03-01 Thread Dudley Ibbett
Looks like I'm missing something here as I always assumed Dartmoor was a moor, 
given its name.  Is there a reason for moors being tagged as heaths?

There are some moors, in name, locally which need mapping.

Dudley

Kevin Peat k...@k3v.eu wrote:

On 28 Feb 2013 23:08, SomeoneElse li...@mail.atownsend.org.uk wrote:

 ...looks excellent as a get away from it all destination...

Bring some good boots as it's pretty muddy after 6 months of rain.

Kevin
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Re: [Talk-GB] Dartmoor needs fixing (heath area missing a chunk)

2013-03-01 Thread Kevin Peat
On 1 Mar 2013 13:48, Dudley Ibbett dudleyibb...@hotmail.com wrote:

 Looks like I'm missing something here as I always assumed Dartmoor was a
moor, given its name.  Is there a reason for moors being tagged as heaths?


http://jncc.defra.gov.uk/protectedsites/sacselection/sac.asp?EUcode=UK0012929

Dartmoor is often described as upland heath which I suppose is basically
what moorland is.

Kevin
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[Talk-GB] TNDS and NaPTAN data

2013-03-01 Thread Oliver Jowett
Hi

Has anyone looked at using TNDS (http://traveline.info/tnds.html) as a
basis for importing bus routes into OSM? I've had a quick look at the data
and it looks like it would be possible to extract at least the stop
ordering for each route. In theory it can also have the road routes between
stops, but the local routes I looked at (Stagecoach Cambridge) only have
the stops, not the routes between them. Still, even the stop list would a
good start.

The background here is that while updating my local area and removing a bus
route that no longer runs through there, I ended up rebuilding the whole
route by hand from timetable information as the OSM route relation was
quite out of date and had missing road sections/stops/etc. Looking at other
routes in the area, they have similar errors. Transcribing routes by hand
is quite a lot of work - just the one route I did took a couple of hours to
get right.

A related issue is that the stop information imported from NaPTAN is
getting out of date. The TNDS data uses NaPTAN stop references and - at
least around Cambridge - there are some new stops in the TNDS routes that
don't exist at all in the current OSM data. Is there an existing mechanism
to update the NaPTAN data? Or what would be the right way to add the
missing stops?

Oliver
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Re: [Talk-GB] Postcode data

2013-03-01 Thread Aidan McGinley
* How accurate is the data already in OSM?
Interesting question Rob, as of today there's approximately 200,000 ways or
nodes tagged with postcodes in OSM, this is made up of about 29,000 unique
postcodes.  Those numbers are not 100% accurate as my bounding box for
getting the data overlaps a bit with France and Ireland. I've removed the
obvious French postcodes (5 digits) there might be a few I missed although
I'm pretty sure the extras don't skew the numbers too much.

I've compared the unique values from that list with the ONS dataset
(excluding terminated postcodes) and come up with the list linked below [1]

There's 1119 unique invalid postcodes, which of of course doesn't account
for ways or nodes that are incorrectly tagged with a valid postcode but is
a useful stat nonetheless.  It should also be relatively easy to get those
cleaned up I would think.
Couple of notes about the data, there are a few postcodes that look like
they are valid (e.g. BR3 1AZ, WC2H 9BD) but they have in fact got some
invalid characters at the end that are not visible so that's why they are
listed.  It also includes postcodes in lowercase as well since it breaks
from the convention of uppercase postcodes, you could argue that they
should be in or out, but it was easier to leave them in.

[1]
https://docs.google.com/file/d/0B0viaV_xKHyCNmJDY1A1X092Zkk/edit?usp=sharing

On 28 February 2013 23:44, Rob Nickerson rob.j.nicker...@gmail.com wrote:

 Interestingly out of the 95 you also identified 2 postcodes that are
 incorrect in OSM... raising the obvious questions:

 * How accurate is the data already in OSM?
 * Should imports be compared to 100% accuracy or a more realistic measure
 of OSM accuracy?

 Rob

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Re: [Talk-GB] Postcode data

2013-03-01 Thread Rob Nickerson
That's an interesting list for anyone who is concerned with data cleansing!
Some of the results are because only the first part of a postcode has been
entered, however even these have numerous formats (e.g. CV3, CV3 ???, CV3
///). For the other errors, it tends to be typos (e.g. CO!6 7BJ, where ! is
a probably a typo of 1 - Shift+1=!), but there are also road names,
numbers, and web URLs in the postcode tag.

Would it be possible to create a list of these where we could add the
correct postcode in a new column and then upload the new data into OSM?

Rob



On 1 March 2013 17:24, Aidan McGinley aidmcgin+openstreet...@gmail.comwrote:

 * How accurate is the data already in OSM?
 Interesting question Rob, as of today there's approximately 200,000 ways
 or nodes tagged with postcodes in OSM, this is made up of about 29,000
 unique postcodes.  Those numbers are not 100% accurate as my bounding box
 for getting the data overlaps a bit with France and Ireland. I've removed
 the obvious French postcodes (5 digits) there might be a few I missed
 although I'm pretty sure the extras don't skew the numbers too much.

 I've compared the unique values from that list with the ONS dataset
 (excluding terminated postcodes) and come up with the list linked below [1]

 There's 1119 unique invalid postcodes, which of of course doesn't account
 for ways or nodes that are incorrectly tagged with a valid postcode but is
 a useful stat nonetheless.  It should also be relatively easy to get those
 cleaned up I would think.
 Couple of notes about the data, there are a few postcodes that look like
 they are valid (e.g. BR3 1AZ, WC2H 9BD) but they have in fact got some
 invalid characters at the end that are not visible so that's why they are
 listed.  It also includes postcodes in lowercase as well since it breaks
 from the convention of uppercase postcodes, you could argue that they
 should be in or out, but it was easier to leave them in.

 [1]
 https://docs.google.com/file/d/0B0viaV_xKHyCNmJDY1A1X092Zkk/edit?usp=sharing

 On 28 February 2013 23:44, Rob Nickerson rob.j.nicker...@gmail.comwrote:

 Interestingly out of the 95 you also identified 2 postcodes that are
 incorrect in OSM... raising the obvious questions:

 * How accurate is the data already in OSM?
 * Should imports be compared to 100% accuracy or a more realistic measure
 of OSM accuracy?

 Rob

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Re: [Talk-GB] Ambiguous restrictions sign

2013-03-01 Thread Shaun McDonald

On 31 Oct 2012, at 16:02, David Earl da...@frankieandshadow.com wrote:

 On 31/10/2012 15:29, Andy Robinson wrote:
 Shaun McDonald [mailto:sh...@shaunmcdonald.me.uk] wrote:
 Sent: 31 October 2012 15:21
 To: Matt Williams
 Cc: Talk-GB@openstreetmap.org
 Subject: Re: [Talk-GB] Ambiguous restrictions sign
 
 
 On 31 Oct 2012, at 14:49, Matt Williams li...@milliams.com wrote:
 
 On 31 October 2012 14:37, David Fisher djfishe...@gmail.com wrote:
 Hi all,
 
 The pedestrianised main shopping street in Croydon has a sign with
 the following wording: Pedestrian Zone.  No vehicles except cycles
 and for loading 6pm-10am.
 How would you interpret that?  I see at least 3 possibilities:
 
 (a) Cycles permitted at any time; loading only permitted 6pm-10am
 (this is what I guess is the correct one)
 (b) Cycles and loading only permitted 6pm-10am (this would also make
 sense; i.e. cycling only outside shopping hours)
 (c) Restrictions apply 6pm-10am (clearly ludicrous!)
 (d) Something else?
 
 I'm guessing it's meant to be (a), but just thought I'd canvas
 opinion before tagging.
 
 I think I agree with (a). I would find it a little strange to disallow
 cycling just during the day (why not just ban it entirely?).
 
 The centre pedestrianised bit of Ipswich has cycling banned from 10:30am -
 4:30pm. It does get pretty busy during that time.
 http://goo.gl/maps/ouha1
 
 
 I'm not sure that's correct? Is it not just banning cyclists from cycling
 against the traffic flow during this period? The sign at the other end
 suggests its open to cyclists at all times in the direction of normal flow.
 
 (from your corrected link http://goo.gl/maps/SM2y9 )
 
 The key thing here is the sign it is underneath. The reference to cyclists in 
 the text is superfluous (and presumably not authorised by the DfT) because 
 the 'low flying motorbike' sign means no MOTOR vehicles, and a bike isn't a 
 motor vehicle. That's not just pedantry: there is a separate sign for banning 
 ALL vehicles, a simple red roundel with nothing inside it. There is no 
 restriction on bikes at any time according to that sign.
 
 Their traffic engineer needs sending back to sign school.
 

So some more info on this situation.

The intention was to allow cycling in both directions between the hours of 
4:30pm and 10:30 am. With vehicles for loading and service access in one 
direction only during those hours. However it's more recently turned out that 
it's not possible to legally sign a road like that.

Unfortunately there are a few cyclists who are spoiling it for everyone else, 
by cycling dangerously during the busy period, thus the probable plan is to not 
allow cycling all the time in terms of signage. (The police are happy to allow 
sensible cycling even if not allowed).

Shaun


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