Talk:Ground truth

Ground truth vs. official truth for administrative boundaries

This page is clear about what to do in cases where there is no ground truth but there is an official truth, but what should be done if the ground truth contradicts the official truth? For example, Syria and Jordan have a border that is mutually and internationally recognized. However, for the past 12 years or so, the OSM-mapped border has followed a line based on satellite imagery of what may or may not be a border fence.

This seems wrong to me. Shouldn't the administrative border be mapped based on the official, legal border? I understand also mapping the on-the-ground border fence (if it is actually a border fence) as a separate way, but to me it seems inaccurate to map that as the border. (I learned of this through this video).

--Gotrees (talk) 08:57, 5 January 2025 (UTC)

admin boundaries

"Sometimes there is no meaningful interpretation of 'ground truth' A typical example would be administrative boundaries" - not really see https://wiki.osmfoundation.org/w/images/d/d8/DisputedTerritoriesInformation.pdf Can you give an example, @Arlo James Barnes: of a border where this applies? Mateusz Konieczny (talk) 10:27, 4 January 2022 (UTC)

Hi Mateusz, sorry if my edit summary didn't make it clear but that wording came from a duplicated page that I merged in, and isn't mine:

https://wiki.osm.org/w/index.php?title=Ground_truth_and_Official_truth&diff=prev&oldid=2222759 (sidenote: wish we had template:oldid here at the osm wiki)

If I had to guess what it meant, I would presume it's referring to the fact that sometimes there is no object at the location of a borderline, but I don't want to put words in the mouth of user:Krauss/user:Ppkrauss... Arlo James Barnes (talk) 22:27, 6 January 2022 (UTC)