Many thanks. Now shared with Richard, Nick and Jerry. Wont share publicly yet as I wouldn't want to disrupt the project comms plan.
@Dave: Oh yes this is definitely not for OSM import. It's node data for linear features for a start!! No, instead this can be used to identify possible missing paths which should then be investigated using ground survey, aerial imagery and GPS (or Strava) data. See it as a helping hand to direct you where to look. Best, Rob On Thu, 10 May 2018, 13:54 SK53, <sk53....@gmail.com> wrote: > Quick correction, as I uploaded heat map to wrong Flickr account. This is > the proper link: https://flic.kr/p/JSXgyh. > > J > On 10 May 2018 1:54 p.m., "SK53" <sk53....@gmail.com> wrote: Quick correction, as I uploaded heat map to wrong Flickr account. This is the proper link: https://flic.kr/p/JSXgyh. J On 10 May 2018 at 13:07, SK53 <sk53....@gmail.com> wrote: > I just checked on the Vision of Britain site: the core data is currently > released under CC-BY-NC. I presume OSM-UK have a waiver from these terms. > > Undoubtedly there will be rights of way which have effectively fallen in > to abeyance. I noted one the other day which was on NPE maps, but no longer > visible on the ground nor on modern OS maps, nor in the data available from > rowmaps. Broadly speaking such paths fall outside the ambit of OSM, but > finding such things is very valuable. > > Note that we have other sources as well. As a quick experiment I spent 15 > minutes quickly tracing paths marked on NPE maps for SE Notts and managed > just over 200 using JOSM. This is of course what I should have done many > years ago rather than adding them to OSM (hindsight is a wonderful thing). > The geometry wont be very good, but can be refined using the 1:25 OOC maps. > Such data can be more useful than the raw names from GB1900, but could be > used in conjunction. Furthermore with suitable tagging this can be added to > OHM (I would suggest start_date=1900-01-01 with end_date=1950-12-31 unless > one knows path is still in use) which makes it a tad easier for sharing > (although OHM overpass instance is not working atm). > > A couple of other things to note regarding the GB1900 data: > > > - Many current footpaths will be marked as Bridle Roads (B.R.). It > would be useful to add these names to the available data. > - footpaths and bridle roads often fall well short of their current > entry points because the current right of way will have followed farm > tracks and service roads, which in many cases have disappeared. > > Returning to use of rowmaps I have a recent geojson file of missing paths > in the North Midlands (Staffs, Derbys, Notts, Leics & Rutland) up on > github: https://github.com/SK53/osm-prow-stats. I intend to add other > areas as time permits. Unfortunately I've never got my comparison process > to work on PostGIS so I still use QGIS which is a little unwieldy for > automation. I process rowmaps data into a fairly standard form in PostGIS > before making the comparisons. This <https://flic.kr/p/25DgebX>is a heat > map of missing footpaths in the East Midlands area as of Autumn 2017, I > compare length of missing paths with total length in a tetrad (2km grid > square). It readily shows hotspots of missing paths. This was done to > identify suitable places for our 2018 New Year footpath mapping. The > National Forest area in SE Derbyshire still has a lot of outstanding > mapping to do: it's not too bad as walking country either. > > Jerry > > > > > On 10 May 2018 at 11:34, Nick Whitelegg <nick.whitel...@solent.ac.uk> > wrote: > >> >> I might be potentially interested in developing something with this data, >> partly because I already run a site (freemap) which shows OSM maps for >> walkers and stores them in a PostGIS database - so it should be an easy >> process to filter out the data to find those points which are not close to >> an OSM highway. It would also be easy for me to adapt my existing code to >> visualise these "FP" points. Presumably they are just points with no >> indication of direction of the path? An "FP" label presumably has >> orientation so something could possibly be deduced about its course at that >> point if orientation was available too. >> >> >> I also already visualise the data so visualising the missing ROWs would >> be easily done too. >> >> >> It would be nice to develop features to find nearby locations where there >> are lots of these missing paths, e.g. if I am in Southampton, find the >> nearest village with 10, 20 (or whatever) missing paths within a 5-mile >> radius. >> >> >> Would be nice to have an app too so you can find these footpaths while >> you're actually out. >> >> >> >> So potentially interested in this, yes. I don't want to commit 100% but >> would be nice to have the data. >> >> >> Nick >> >> >> >> ------------------------------ >> *From:* Richard Fairhurst <rich...@systemed.net> >> *Sent:* 10 May 2018 09:07:49 >> *To:* talk-gb@openstreetmap.org >> *Subject:* Re: [Talk-GB] Footpaths - search for the missing ones >> >> Rob Nickerson wrote: >> > Basically we have point data of historic footpaths (some 300k points) >> and >> > I think it would be amazing to compare this to OSM to see if we can >> find >> > more footpaths to map. >> >> Very cool. Could you post the data somewhere? >> >> Richard >> >> >> >> -- >> Sent from: http://gis.19327.n8.nabble.com/Great-Britain-f5372682.html >> >> _______________________________________________ >> Talk-GB mailing list >> Talk-GB@openstreetmap.org >> https://lists.openstreetmap.org/listinfo/talk-gb >> >> _______________________________________________ >> Talk-GB mailing list >> Talk-GB@openstreetmap.org >> https://lists.openstreetmap.org/listinfo/talk-gb >> >> >
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