In my point of view, the debate about the optimal precision of mapping is an important one. I would very much welcome inputs from experts that are able to evaluate potential memory overload impacts as well as increased rendering calculation times linked to a massive rise of the number of nodes for a given object.
This being said, my main concern with « too precise » mapping is data maintenance over time. For a lot of objects, « Ground Truth » is not a permanent feature! For example, forest limits evolve over time, as well as parking spaces alongside a street (just to mention another parallel discussion thread).
@RB: Having looked at some regions you pointed out, I saw quite a number of imprecise landuse cover objects if checked against the SwissImage aerials (that are only a few years more recent than the Digital Globe 2017 used for your initial mapping). How are you going to restore ground truth for those objects? It will imply to slightly move hundreds or even thousands of nodes, in other words a tremendous amount of work!
If you like precise mapping, maybe checking buildings and landuse cover in urban areas might bring more added value to the map? (especially in areas where construction works continually lead to much more relevant map changes).
Le 27 juin 2022 à 16:08, Sentalize sentalize@yahoo.de a écrit :
I'm not sure this is an "attack" .. in the case cited, I find the simplified version not that much worse. How many nodes do we want in an object? 10 per meter? 10'000? Beauty is in the eye of the beholder, of course, and I as well prefer a somewhat nicely rounded road than a triangle etc .. but it's not very clear where too much becomes too much. Extreme detail doesn't necessarily provide a better rendered image or more information and could just lead to overloaded mobile devices. But I have no idea where the ideal nodecount should be.
Am Montag, 27. Juni 2022 um 11:38:26 MESZ hat RB tanrub@gmail.com Folgendes geschrieben:
A user is destroying precise landuse mapping in Wallis. "Simplifying" in this case turns precise landuse cover into weird angles and destroys the work done by the previous contributors while harming the OSM database. Such moves could furthermore clearly be perceived as aggressive. Typical examples of the vandalism can be observed there https://www.openstreetmap.org/way/965324922/history#map=19/46.02973/7.11287 https://www.openstreetmap.org/way/965324922/history#map=19/46.02973/7.11287
What is the appropriate way to react to such attacks against the project?
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