Changeset: 89701444
Realignment, footpaths and roads, Wikidata and more in London
Closed by WakefieldMapper
Tags
changesets_count | 345 |
---|---|
created_by | iD 2.18.4 |
host | https://www.openstreetmap.org/edit |
imagery_used | Bing |
locale | en-GB |
resolved:almost_junction:highway-highway | 2 |
resolved:crossing_ways:building-building | 1 |
resolved:crossing_ways:building-highway | 8 |
resolved:crossing_ways:highway-highway | 23 |
resolved:crossing_ways:railway-railway | 3 |
resolved:disconnected_way:highway | 3 |
resolved:outdated_tags:deprecated_tags | 3 |
resolved:outdated_tags:incomplete_tags | 2 |
resolved:outdated_tags:noncanonical_brand | 2 |
resolved:suspicious_name:generic_name | 2 |
warnings:crossing_ways:building-highway | 1 |
warnings:crossing_ways:highway-highway | 8 |
Discussion
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Comment from Cebderby
Too many problems with this edit:
Node dragged and joined to remote area. False connections added between ways correctly mapped as being at different levels, or unconnected like underground lines passing over each other. Layer 1 and -1 values added seemingly at random to some buildings and ways. Some features moved to match unaligned Bing imagery. To protect the integrity of the map, this has been reverted. Changes are visible at https://overpass-api.de/achavi/?changeset=89701444
if there are brand: or addr: additions which are useful to be re-applied. False way connection and realignment will be reverted. -
Comment from WakefieldMapper
Which is the best imagery?
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Comment from Cebderby
For sharpness, absence of shadows, verticality, the new Bing imagery is possibly the best imagery we have ever had. Just align it to the map. The problem is not the imagery.
The issues here are false connection of ways and nodes which are not intended to be connected. There may be few people relying on OSM in Pontefract or even Wakefield for foot and public transport navigation, but there are likely to be thousands doing so in central London. False connections cannot be tolerated. One footway you added in one of the edits connected in sequence: a surface road - underground track - underground platform - another surface road - a lift inside a building - the adjacent lift - a tunnel footway. By connecting these with a footway you are saying there is a route (and step free so potentially wheelchair accessible) directly from each of these to the next. And different underground tracks might all happen to have layer=-3 and cross each other, eg because the mappers don't know which is above the the other. This does not mean that the tracks should be connected. Connecting footways etc carefully mapped passing over each other with different layers is just bad.
And the apparent approach to try to clear highlighted 'issues' by the easiest/first means possible, eg putting a layer value on one or other is very very bad. Layer is generally not a tag for buildings. Negative layer on ways generally means underground eg in tunnel under another way, positive elevated eg on bridge over another way. Sometimes ways do cross building boundaries, especially in cities with complicated 3d shapes. The map is better with the so-called 'issues' left in place than with guessed fixes applied.
Try to map in areas you know, aim to make the map a useful (eg think of road, foot, cycle,public transport routing) simplified (eg don't add footways which are actually just ordinary sidewalks) representation of the reality, rather than attempting to fix 'issues'. Trying to fix 'issues' in areas you do not know is often damaging, not beneficial.
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