Developer needed to make Wikidata’s geographical data compatible with GPS tools

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A couple third-party workarounds in the meantime:

  • QLever’s built-in UI has GeoJSON support. Make sure the query has a column containing the geometry as well-known text, run the query, click “Map view”, and click “Export as GeoJSON”. QLever queries aren’t quite compatible with Wikidata Query Service queries: it’s SPARQL, but some services like BBOX are unimplemented in favor of more advanced predicates, and you have to use MINUS instead of FILTER NOT EXISTS.
  • Ultra is a frontend to a variety of querying services. In the front matter, specify sparql as the type and the WDQS endpoint as the server. Make sure the query has a column containing the geometry as well-known text. Run the query and click Download for the results in GeoJSON format. (Ultra also supports QLever as a backend, in case you want a similar frontend for that.)
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