Aidan
I've had a look at your list and would say it's way under - you only have 3
B27 codes and I've completed addressing this whole postcode area - I've not
got every one complete but I'm sure there's far more than the 3 you're
showing, including the one for my own house which is missing!
Brian,
The list was of invalid postcodes. Hopefully everything you entered was a
valid postcode (it seems that way given that only 3 invalid B27 postcodes
appear in the list).
Rob
On 12 March 2013 22:37, Brian Prangle bpran...@gmail.com wrote:
Aidan
I've had a look at your list and would
Rob,
Probably, I'm a little busy at the moment so not really going to get round
to doing it in the short term. Can probably rustle up a list mapping the
ways and nodes to the incorrect postcode fairly quickly which would
probably help?
Aidan
On 1 March 2013 17:35, Rob Nickerson
* 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
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 !
On 27 February 2013 09:03, Andy Allan gravityst...@gmail.com wrote:
On 26 February 2013 22:08, Aidan McGinley
aidmcgin+openstreet...@gmail.com wrote:
is the actual output that would get loaded onto OSM.
Please don't load this data into OpenStreetMap. It's not a good idea.
1) The source data
I haven't had time to do the analysis yet Robert, I've been focussing on
fixing the issues I've already identified, once they are done I'll do
something more detailed. But at a high level these are the numbers:
95 total buildings with an existing postcode tag (after removing ways
mapped to more
On 28/02/2013 12:27, Aidan McGinley wrote:
12 of these buildings only have the first part of the postcode. All
of these partially match what is output by the script, for example way
5042255 is tagged in OSM as SW15 and the script identifies it as SW15B2U.
Hopefully that's a typo for
Steve, yes you're right that was a typo on my part :)
Here is the full analysis of the problematic ways
61130908 SW2 4RT in OSM vs SW2 4SG from ONS
112682060 in OSM SW1 2SE vs SW1V 2SE from ONS
139941192 in OSM vs SE11 5EN vs SE11 5EF from ONS
116957518 in OSM vs SW1V 1DX vs SW1P 1JQ from ONS
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
On 26 February 2013 22:08, Aidan McGinley
aidmcgin+openstreet...@gmail.com wrote:
is the actual output that would get loaded onto OSM.
Please don't load this data into OpenStreetMap. It's not a good idea.
1) The source data appears to be heavily overprocessed.
Users should note that postcodes
Aidan,
On 27 Feb 2013 09:04, Andy Allan gravityst...@gmail.com wrote:
Please don't load this data into OpenStreetMap. It's not a good idea.
100% agree with Andy. To be acceptable your script would need to do at
least as good a job as mappers could do by hand which I don't think is
possible
Thanks for the feedback Andy, I'll tackle each point below, @Kevin
hopefully #3 should address your concerns about accuracy
1) The source data appears to be heavily overprocessed.
This only applies to data other than the postcode centroids, such as the
Census Output Areas and other
That's right Ed, if a building already has a postcode I won't be changing
it. I'm actually outputting them separately and using them for some
quality assurance. I'd be interested to know the two postcodes you are
referring to just to check how they look in the source data.
On 27 February 2013
Aidan,
On 27 February 2013 11:12, Aidan McGinley
... I've only included the highest quality data
which is postcode centroids that fall within a building within the area of
the postcode...
Does that allay any concerns about the import?
Does the centroid always fall within the postcode area?
Kevin,
Yes, the centroid falls within the postcode area for the highest quality
indicator by definition. To be marked in the highest quality data set, the
centroid must fall inside a building within the postcode area (see the user
guide that accompanies the data for more details). These high
Hi Andy,
Aidan approached the talk-gb mailing list last month about this postcode
idea [1]. A discussion was held, and from the back of this several changes
were made (mainly related to reducing the size of the import to ensure that
only the very best data was used, but also to ensure that QA was
Time for an update on this.
I've done my first proper test run of this today using the latest ONS file.
The test was run over an area of about 60 square miles in southwest
London. There's about 3000 postcodes in the result set which I'm pretty
impressed with assuming they are all valid, so we
@Brian - Yes I need to formulate how to QA this. I'd like to automate the
QA as much as possible but having some elements done manually is obviously
beneficial and the more people that can cast their eye over it the better.
Any volunteers please do let me know, and also if anyone has any ideas
On 15 January 2013 19:28, Rob Nickerson rob.j.nicker...@gmail.com wrote:
Hi Matt,
I'm getting results from other cities in the Land Registry tool. Should
this apply the same +- 0.1 degrees logic? Would also be nice if you could
add the edit this way in external links (like those on a way's
On 17 January 2013 23:01, Rob Nickerson rob.j.nicker...@gmail.com wrote:
I would imagine that this would add a fair number of postcodes, and although
those interested in address lookup can just use the centroid database
without needing to go to OSM, this requires knowledge of the database
On 16 January 2013 13:04, Brian Prangle bpran...@gmail.com wrote:
You might like to get a volunteer to check a pilot import that's limited
within a manageable area - suggest a limited range of postcodes
Another useful check would be to apply your matching over the OSM
database, and pull out all
I would imagine that this would add a fair number of postcodes, and
although those interested in address lookup can just use the centroid
database without needing to go to OSM, this requires knowledge of the
database (which non-UK developers might not have) and does not link
postcodes back to
Hi Aidan
You might like to get a volunteer to check a pilot import that's limited
within a manageable area - suggest a limited range of postcodes
Regards
Brian
On 15 January 2013 11:32, Aidan McGinley
aidmcgin+openstreet...@gmail.comwrote:
@Rob yes I had seen that. It is a great tool, but
@Rob yes I had seen that. It is a great tool, but as you say it's
difficult to be absolutely sure that what you get back is accurate
To summarise what I'll be looking at doing
Filter the following from the ONS Postcode data:
- Postcodes which have a date of termination set
- Postcodes whose
Hi Matt,
I'm getting results from other cities in the Land Registry tool. Should
this apply the same +- 0.1 degrees logic? Would also be nice if you could
add the edit this way in external links (like those on a way's page on
OSM.org).
Cheers,
Rob
___
Hi Aidan,
Sounds like you have thought this through to ensure that this import will
work well in practice. I would be more satisfied if imports were to closed
ways with building=* only (as mentioned by others).
Have you seen the Land Registry 'price paid' open data that includes
addresses and
Been toying with some ideas for how to use the ONS Postcode data[1]. One
idea that I have been exploring is to check if the value for the centre of
the postcode is inside a closed way, and if so then tag that way with the
appropriate addr:postcode. I mocked up a script to check this using the
Hi Aidan
If you were to do this then two things you should consider:
1. only tag closed ways where tag is building=xx AFAIK water and woods
and gardendens etxc don't have postcodes
2. how to treat buildings where there is already a postcode and if
correct/incorrect
Regards
Brian
On 13
On 13/01/13 15:21, Aidan McGinley wrote:
Been toying with some ideas for how to use the ONS Postcode data[1].
One idea that I have been exploring is to check if the value for the
centre of the postcode is inside a closed way, and if so then tag that
way with the appropriate addr:postcode. I
Thanks for the feedback.
@Brian - The script is filtering to only include closed ways, although I
wasn't sure whether to restrict it to just ones with building=xxx, as this
would mean some of the amenity=XXX type tags would get missed. It's trivial
to do though should this go ahead. Had not
Postcodes don't have to assigned to buildings in OSM. In the last couple of
weeks I have not added any postcodes to buildings but I have added postcodes
to amenities as areas including stadiums, schools, hospitals and police
stations. None of these were buildings.
Once you have a plan here then
*I'm sure this is old news to some of you, but...
**http://news.bbc.co.uk/1/hi/technology/8402327.stm
Cheers
Dave F.
*
___
Talk-GB mailing list
Talk-GB@openstreetmap.org
http://lists.openstreetmap.org/listinfo/talk-gb
On 9 Dec 2009, at 15:18, Dave F. wrote:
*I'm sure this is old news to some of you, but...
**http://news.bbc.co.uk/1/hi/technology/8402327.stm
Arhhh. but
Correction - Poscodes will not be free
http://giscussions.blogspot.com/2009/12/correction-poscodes-will-not-be-free.html
The government
On 09/12/09 21:29, Peter Miller wrote:
*I'm sure this is old news to some of you, but...
**http://news.bbc.co.uk/1/hi/technology/8402327.stm
Arhhh. but
Correction - Poscodes will not be free
http://giscussions.blogspot.com/2009/12/correction-poscodes-will-not-be-free.html
I don't think
35 matches
Mail list logo
