[Talk-GB] [OSM-talk] Improving ref=* documentation

[Mateusz Konieczny]

Aug 6, 2021, 14:51 by colin.smale at xs4all.nl:

>> On 08/06/2021 1:52 PM Andy Townsend <ajt1047 at gmail.com> wrote:
>>
>>
>> On 06/08/2021 12:26, Colin Smale wrote: 
>>
>>> There cannot be more than one "authoritative source" by definition.
>>>
>>
>> Sure there can.  We have lots of places in OSM (including international borders) where authoritative sources conflict.  It's enough of a problem that the OSMF has a policy specifically for it: >> https://wiki.osmfoundation.org/w/images/d/d8/DisputedTerritoriesInformation.pdf>>  .
>>
>>
> Got me there, Andy. The United Nations could be used as an authoritative source, but I think even they acknowledge disputed areas. But I admit I struggle to think of any other examples.
>
actual examples (outside UK, hopefully it is OK):

- https://www.openstreetmap.org/user/ke9tv/diary/391486
- https://www.openstreetmap.org/user/ke9tv/diary/42951 <https://www.openstreetmap.org/user/ke9tv/diary/42951>
- self contradictory address database (official Polish government database with the same 
address appearing several times close to each other - fixed after report from OSM mapper)
- self contradictory address database - location and postcode mismatching (as above)
- self contradictory address database - location and assigned town mismatching (as above)
- conflicting interpretation of borders in documents/databases of local government,military, nature protection agency (AKA is given area in nature reserve or not)
- mismatch between maps/databases of the same agency, OCR errors, transcription
errors resulting in the supposedly equivalent data not being equivalent
- assigned unique ids not being unique, resulting in various conflicts
- conflict in interpretation of the authoritative source that is ambigous
- different entities claiming to be authoritative or being authoritative
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