The link leads to a Liverpool Uni webmail login. You would increase the chances of OSMers attending if it was on a weekend.
Phil (trigpoint) On Tue Sep 27 13:21:27 2016 GMT+0100, Margaux Meslé wrote: > Hello, > > This is to let people know that I am co-hosting a mapathon next Monday 3rd > of October in Liverpool. The eventbrite is: > > https://mappingeventsota.eventbrite.co.uk > <https://owa.liv.ac.uk/owa/redir.aspx?C=jtiJUdwOwwa7TVP60hc4-rV3K9vANxQ2uTwL4gQU-H9bDXe00ObTCA..&URL=https%3a%2f%2fmappingeventsota.eventbrite.co.uk> > > It would be great to have some HOT and/or OSM people there. > > Thanks, > > Margaux Mesle > > On Tue, Sep 27, 2016 at 1:00 PM, <[email protected]> wrote: > > > Send Talk-GB mailing list submissions to > > [email protected] > > > > To subscribe or unsubscribe via the World Wide Web, visit > > https://lists.openstreetmap.org/listinfo/talk-gb > > or, via email, send a message with subject or body 'help' to > > [email protected] > > > > You can reach the person managing the list at > > [email protected] > > > > When replying, please edit your Subject line so it is more specific > > than "Re: Contents of Talk-GB digest..." > > > > > > Today's Topics: > > > > 1. Re: UK Postcodes (SK53) > > 2. Re: UK Quarterly Project Oct-Dec 2016 (SK53) > > > > > > ---------------------------------------------------------------------- > > > > Message: 1 > > Date: Mon, 26 Sep 2016 14:29:12 +0100 > > From: SK53 <[email protected]> > > To: Brian Prangle <[email protected]> > > Cc: Talk GB <[email protected]> > > Subject: Re: [Talk-GB] UK Postcodes > > Message-ID: > > <CAELijW8zUW+9vrsP07nCFXz+zTdEhvC6MBvd8VuASg69e7p9EQ@ > > mail.gmail.com> > > Content-Type: text/plain; charset="utf-8" > > > > I just re-read a post > > <http://sk53-osm.blogspot.co.uk/2013/12/british-postcodes- > > on-openstreetmap.html> > > I wrote nearly 3 years ago. I think a lot of it holds true today, so I've > > copied the main points here : > > > > > > 1. The simplest, but not necessarily the easiest target, is to map at > > least one postcode in each postcode sector. This is harder than it > > appears > > because obvious things to map in sparsely populated rural areas may > > require > > surveys. For instance FHRS data has two B&Bs in Port Wemyss on Islay, > > but > > the names are not shown on the OS Open Data StreetView. Similarly a > > degree > > of caution must be exercised on farms in the Rhinns of Islay and on the > > Oa > > because individual farmsteads may include two or three properties > > (perhaps > > all owned by the same extended family, but nonetheless distinct. > > > > 2. Achieve 5% completion. This reflects a DOUBLING of current postcode > > data, and therefore must be regarded as ambitious. This is however, the > > minimum condition for breaking the back of the postcode problem. I > > believe > > with a concerted effort we could achieve this in 3 months, using > > conventional crowd-sourcing techniques. > > > > 3. Achieve 10% completion. A second doubling will probably require more > > tool based support. The obvious targets are semi-automated matching of > > FHRS > > & Land Registry data, and semi-automated identification of single > > postcode > > streets. > > > > 4. Postcodes along major roads (A & B roads). These may require some > > survey work, but again because many retail outlets are along such roads > > there is already a decent amount of information available from FHRS. > > > > This was December 2013, so perhaps 5% and 10% should be nearer 10% and 20%. > > I don't have up-to-date figures but back in May 2015 we had 73,372 full > > well-formed postcodes for GB (not whole of UK) which is still under 5%. > > These were located in just under 8000 postcode sectors (out of a total of > > 12,300 or so, with another 1000 populated in the last year). FHRS data has > > information on nearly 250k postcodes (inc NI) and 10k distinct postcode > > sectors. All these figures are based on raw strings, i.e., not checked if > > valid or in the right place. We still have thousands of schools mapped > > without postcode (even some where ref_edubase was added) so this is another > > fairly easy target. > > > > The big difference from 3 years ago is that we have more people interested > > in creating tools to assist these processes: something where the 3 month > > timescale is better than a shorter one. > > > > We have needed to get more address data for some, but on its own it's not a > > very strong motivator. My hopes for making big progress with Land Registry > > data were dashed once OpenAddresses and Owen Boswara clarified the 3rd > > party content in the data, and similarly the OpenAddresses project finished > > without having much in the way of additional data to offer us. (I still > > believe that there's scope in their approach and they built some > > interesting tools, but it was predicated on already having a decent amount > > of usable open data). When one looks at the formidable success of BANO in > > France there must be scope for something similar in the UK. > > > > I'm going to try & update my PC completion maps for the UK. I have some now > > but I know I have lost data from filtering the gb file. > > > > Jerry > > > > > > On 26 September 2016 at 11:44, Brian Prangle <[email protected]> wrote: > > > > > It looks like the next UK Quarterly Project will be based on improving > > > address data for town centres using the food hygiene dataset. Why don't > > we > > > have a push generally on postcodes too, not limiting it to town centres? > > > > > > Regards > > > > > > Brian > > > > > > On 26 September 2016 at 11:25, David Woolley <[email protected] > > > > > > wrote: > > > > > >> On 26/09/16 10:19, Owen Boswarva wrote: > > >> > > >>> That could be done but it's not straightforward; you'll get a lot of > > >>> overlapping postcode sectors and sectors with non-contiguous parts. > > >>> GeoLytix produced an open dataset like that some time ago: > > >>> http://blog.geolytix.net/tag/postcode-boundaries/ > > >>> > > >> > > >> In my view, inferring polygons is something that should only be done in > > >> the data consumer, as they involve creating data that cannot be > > justified > > >> from the input data. > > >> > > >> > > >>> On 26 September 2016 at 09:39, Colin Smale <[email protected] > > >>> <mailto:[email protected]>> wrote: > > >>> > > >>> How about deriving polygons for the postcode sector level (XX9 9) > > >>> from the centroid point cloud, and adding the polygons to OSM? I > > >>> don't know how many that would give, but it would be a whole lot > > >>> less than 500k and still at a very usable level. > > >>> > > >>> > > >> > > >> _______________________________________________ > > >> Talk-GB mailing list > > >> [email protected] > > >> https://lists.openstreetmap.org/listinfo/talk-gb > > >> > > > > > > > > > _______________________________________________ > > > Talk-GB mailing list > > > [email protected] > > > https://lists.openstreetmap.org/listinfo/talk-gb > > > > > > > > -------------- next part -------------- > > An HTML attachment was scrubbed... > > URL: <http://lists.openstreetmap.org/pipermail/talk-gb/ > > attachments/20160926/d97b1a97/attachment-0001.html> > > > > ------------------------------ > > > > Message: 2 > > Date: Mon, 26 Sep 2016 14:44:37 +0100 > > From: SK53 <[email protected]> > > To: Dave F <[email protected]> > > Cc: "[email protected]" <[email protected]> > > Subject: Re: [Talk-GB] UK Quarterly Project Oct-Dec 2016 > > Message-ID: > > <CAELijW-PSA055iRDmrDRF+KJzQD5AXDBta5PF6Bt+AfHRKcEWQ@ > > mail.gmail.com> > > Content-Type: text/plain; charset="utf-8" > > > > The three obvious categories are restaurants (inc. cafes), takeaways & > > pubs. Supermarkets is a small set. Schools we've already done. Retailers > > (other) covers convenience stores and other small food shops. The other > > categories are less useful (although care homes in conjunction with CQC > > Open Data is a relatively small group which is probably undermapped). > > > > I'd actually avoid trying to filter on groups because in general it's much > > easier to maintain data for rows of shops which is complete. One runs into > > issues with nodes being slightly misplaced, name changes etc which in the > > end make it harder to track. It was Paul William's mapping of Mansfield > > Road in Nottingham back in 2011 which made me realise this. I'd done a bit > > of shop mapping before a London pub meeting and found my productivity was > > really low because bits & pieces were already there but not quite in the > > right place. > > > > The selection criterion I used when I did this back in 2013 for Nottingham > > was numbers of FHRS entries per postcode. I used QGIS to show these as > > bubbles > > <https://www.flickr.com/photos/sk53_osm/8559309309>and was able to create > > a > > GPX file from QGIS for my Garmin. The advantage was that I could knock off > > a known number quickly: mainly I just visited a place on Sunday morning & > > took photos, a few house numbers from the surrounding area for additional > > context for addressing & that was it. Of course these leaves you with > > isolated ones in funny places, but most of these I linked to when I was > > doing something in the car so that it was easier to visit the sites > > quickly. > > > > Jerry > > > > On 26 September 2016 at 12:40, Dave F <[email protected]> wrote: > > > > > A. > > > > > > However the FHRS database is quite big, so maybe just do a subset, say, > > > restaurants? > > > > > > Dave F. > > > > > > On 26/09/2016 12:20, Jez Nicholson wrote: > > > > > > 5 days to go until the next UK Quarterly Project > > > > > > Without spinning off into a discussion of the merits of each > > > suggestion....what do we need to do to agree the subject? > > > > > > I believe that suggestions were: > > > > > > A. improving address data for town centres using the food hygiene dataset > > > B. town centre blitzes > > > C. civil parishes > > > D. trig points > > > E. speed limits > > > F. a collaboration with the German Community > > > > > > please repeat and expand the list if I missed one. > > > > > > Regards, > > > Jez > > > > > > > > > _______________________________________________ > > > Talk-GB mailing [email protected]https://lists. > > openstreetmap.org/listinfo/talk-gb > > > > > > > > > > > > _______________________________________________ > > > Talk-GB mailing list > > > [email protected] > > > https://lists.openstreetmap.org/listinfo/talk-gb > > > > > > > > -------------- next part -------------- > > An HTML attachment was scrubbed... > > URL: <http://lists.openstreetmap.org/pipermail/talk-gb/ > > attachments/20160926/8c00ac03/attachment-0001.html> > > > > ------------------------------ > > > > Subject: Digest Footer > > > > _______________________________________________ > > Talk-GB mailing list > > [email protected] > > https://lists.openstreetmap.org/listinfo/talk-gb > > > > > > ------------------------------ > > > > End of Talk-GB Digest, Vol 120, Issue 39 > > **************************************** > > > -- Sent from my Jolla _______________________________________________ Talk-GB mailing list [email protected] https://lists.openstreetmap.org/listinfo/talk-gb
