Mechanical Edits/Mateusz Konieczny/handle landuse in central Africa, mostly East Congo
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![]() | Please, put comments on talk page (Talk:Mechanical Edits/Mateusz Konieczny/handle landuse in central Africa, mostly East Congo) |
![]() | Reverts are not going to happen, as mentioned problems are getting fixed. |
The initially planned revert concerned landuse mapped in https://www.openstreetmap.org/#map=10/0.4408/29.3513 area that had some major quality issues and was interpreted as an import.
Pause
This is not an import, but mapping using aerial imagery. Please don't follow any revert action on any affected changesets. Potential issues are being discussed with involved users. (Edvac)
- Yes, I will not make any reverts without explicit warning and time for response (at least two weeks). Hopefully mentioned problems can be fixed without losing landuse data, things seems promising now. Mateusz Konieczny (talk) 09:37, 3 February 2021 (UTC)
- On topic how to describe edit adding private datesets created to add them to OSM and is it qualifying as import or not - I started https://lists.openstreetmap.org/pipermail/talk/2021-February/086083.html on talk mailing list Mateusz Konieczny (talk) 10:35, 3 February 2021 (UTC)
- Thanks Mateusz. Check my answer on talk. We are talking about manual editing not imported datasets. --Michael Montani (talk) 16:13, 3 February 2021 (UTC)
Reason for suspecting import
Overpass Turbo data queries for old data state, reveal that geometries appeared together.
- It was described as tracing aerials and adding them in one go by UN representative handling this organized edit
- See https://lists.openstreetmap.org/pipermail/talk/2021-February/086083.html for wider discussion whatever this kind of edit is import or not (it was not)
Historical data:
- 2014: no landuse https://overpass-turbo.eu/s/1387
- 2018: no landuse https://overpass-turbo.eu/s/1388
- 2020-01: no landuse https://overpass-turbo.eu/s/1389
- 2020-03: no landuse https://overpass-turbo.eu/s/138a
- 2020-04-01: no landuse https://overpass-turbo.eu/s/138b
- 2020-04-02: no landuse https://overpass-turbo.eu/s/138k
- 2020-04-04: import-type landuse appears suddenly: https://overpass-turbo.eu/s/138l
- 2020-04-05: import-type landuse: https://overpass-turbo.eu/s/138j
- 2020-04-09: import-type landuse: https://overpass-turbo.eu/s/138i
- 2020-04-15: import-type landuse: https://overpass-turbo.eu/s/138d
- 2020-05: import-type landuse: https://overpass-turbo.eu/s/138c
TODO
- Notify relevant people
- I've been notified, please get in touch so we can solve any problem. UNIS is not an import. --Michael Montani (talk) 08:50, 3 February 2021 (UTC)
- Responded, hopefully issues will be solved and there will be no need for mass revert Mateusz Konieczny (talk) 09:34, 3 February 2021 (UTC)
- I've been notified, please get in touch so we can solve any problem. UNIS is not an import. --Michael Montani (talk) 08:50, 3 February 2021 (UTC)
- Prevent this from happening in future
- iD requires no action as it is basically impossible to edit such monster in iD
- https://josm.openstreetmap.de/ticket/20451#ticket for JOSM
- Osmose report?
Problems
- Source of data is not clearly specified and ts license in unknown
- Created objects such as supermassive multipolygons with 933 ways, and over 68 000 nodes building them. Editing this works only in some editors, requires good network connection and beefy device due to its extreme size. (this is getting fixed :) )
- This makes such data worse that no data at all as it heavily discourages editing, especially from people using mobile devices or having worse computer or lower quality of Internet connections
- Relations are such large that analyzing this edits is complicated and hard to do
- Trying to open that area in iD was futile on an older computer
- Unite Maps Initiative/UN Mappers is not mentioning UNIS whatever that is (and that documentation at wiki must include "links where the community can access any non-standard tools or data sources used")
- Fake data such as strip of farmland to forest around edited area (fixed!)
- Farmland mapped in places without farmland, supermassive size of multipolygon makes hard to fix it. Maybe delete this jumbofarmland?
Additionally at least following OEG rules were violated
- Missing documentation of "plans for a “post-event clean up” to validate edits, especially if the activity introduces new contributors to OpenStreetMap"
- missing "after the activity has completed, or at least once a month for ongoing efforts, a description of the results"
- "Changeset comments should include the unique hashtag described on the wiki page under Organised Editing/Activities/Name of the Activity (as described in the Process section), and link to that page." (see for example https://www.openstreetmap.org/changeset/98652577 that is missing that link)
Fixing
Following is necessary to do to avoid mass scale revert of this landuse mapping. If not done or impossible to do, then mass removal will happen:
- Provide source of this edit (what is hiding behind "UNIS"?) - see https://en.wikipedia.org/wiki/Unis
- Verify whatever its license matches what is ODBL compatible and document what you discovered
- Verify whatever data matches on the ground situation or at least aerial imagery
- Split landuse in multipolygons constructed with no more than 50 ways to make this area editable (happening right now, thanks)
- areas must not be disjointed without a good reason (named areas etc)
- Avoid multipolygons where possible
- Fix valid complaints detected by JOSM and Osmose caused by this import
Notifications
made:
- https://www.openstreetmap.org/changeset/83025584
- un.mappers@un.org as recommended by https://wiki.openstreetmap.org/wiki/Unite_Maps_Initiative
- Talk:Unite Maps Initiative
- Organised Editing/Activities
Pending notifications:
- Notify other accounts if any - see https://lists.openstreetmap.org/pipermail/talk/2021-February/086079.html