Re: [Talk-GB] Multiple coincident boundary nodes. Data quality issue ?

2017-08-21 Thread Colin Smale
Admin boundaries (jurisdiction of local authorities) extend to the low water mark (MLWS) unless otherwise extended by law (there are a few of these cases: Bristol, Torbay, Brighton Marina...). High water and low water may be very close where there are steep cliffs, or even coincident where the

Re: [Talk-GB] [Talk-gb-london] New OSM London Meetup - Invite

2017-08-21 Thread Tom Chance
Hi Nicolas, I think that could be really valuable. One of the first mapping parties I attended was one I helped Harry organise, to map north Peckham when the whole area was a blank space on the map, and in particular to add more detail for roads and footpaths through estates that were usually

Re: [Talk-GB] Multiple coincident boundary nodes. Data quality issue ?

2017-08-21 Thread Mike Parfitt
Fair point, Fords, Gates, Crossings etc should be tags on way nodes where appropriate, but in this case, having an Administrative tag on a subset of the nodes defining an Administrative boundary is pointless and bloats the database without adding value. No matter what the authority of the

Re: [Talk-GB] Are Northern Ireland, Wales & England 'states'?

2017-08-21 Thread Andrew Hain
Should we go a bit further and strip out all is_in tags not used by Nominatim across Britain (which may mean all of them), or are there other uses we should consider? The community in France did that when they finished mapping communes. -- Andrew From: Dave F

Re: [Talk-GB] [Talk-gb-london] New OSM London Meetup - Invite

2017-08-21 Thread SK53
My normal practice is to map the estate as a separate landuse area and name that. One example I've done fairly recently in this way is the Whittington Estate, Highgate. My view is that named estates vary in size & local perception too much for a

Re: [Talk-GB] Are Northern Ireland, Wales & England 'states'?

2017-08-21 Thread Colin Smale
One difference with France is that not everywhere in the UK is in a parished area. In some cases the lowest local government area is a unitary authority which can be huge. A French commune is often just a single hamlet. There are nearly 37k communes in France! Another difference is that the