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Thanks Sam, the extension docs are helpful, thanks!

Here are a few thinks I learned from that and from other conversations. Maybe we can stitch together a full picture here :).

  • The extension can show points and areas from all kinds of sources. But the most important source for OSM is the wikidata-key on a osm object.
    • Off all the methods to pull geometries into Kartographer this is the only one where OSM is involved, right? Or are there indirect methods via SPARQL (…)?
    • This is an indirect relation: The OSM object gets the tag; wikipedia looks directly at the OSM data; no wikidata-to-osm “relation” is needed
    • Do we know how they do this? I suspect they have their own minutely updated DB?
  • A map can have multiple Wikidata IDs (like shown in Help:Extension:Kartographer - MediaWiki)
  • However, I heard that the map cannot handle the case when a Wikidata ID is tagged on multiple OSM objects. If true, I really hope they will fix it, since showing a road in Wikipedia mean, liking to the Wikidata ID of the Road which in turn is added to all road segments.
    • Do we know if this issues will be worked on? Is there a public tracker for issues?
  • It looks like there is no tooling from Kartographer to add the Wikidata ID, so that needs to be looked up manually, right?
  • I wonder, if only wikidata keys or also all the other *:wikidata:* key would work. The docs only reference wikidata, but from an OSM point of view we would want tags like subject:wikidata and such whenever needed… – They link the wikidata wiki page which in turn explains those other tags, so that is fine I guess.
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