User talk:Dschep

Gallery entry proposed on Talk:Ultra/Examples

Hello, and thank you for Ultra. I have written a document that scores campsites and caravan sites by what lies within walking distance, and I have proposed it for the gallery on Talk:Ultra/Examples rather than adding it myself, because my account is new and cannot upload the screenshot yet.

Source and documentation: https://github.com/stephanbuettig/overpass-campsite-scoring

Three things I ran into while building it that might deserve a line in the documentation, independent of whether the map belongs in the gallery.

A campsite mapped as a multipolygon relation arrives from osm2geojson as a GeometryCollection, which has no coordinates. My transform threw on it and the whole map rendered blank, with nothing in the interface to say why. One object in 1084 was enough to do it. That failure mode took a long time to find.

Without icon-ignore-placement: true on every symbol layer, MapLibre lets the topmost layer claim placement and silently suppresses the icons underneath. A playground 25 m from a campsite simply vanished, which looks like missing data rather than collision detection.

Documentation written as comments inside the OverpassQL body pushed the encoded query past the URL length limit, and the resulting HTTP 414 reached the browser as TypeError: Failed to fetch, because the error page carries no CORS headers. Keeping prose in the YAML header fixed it.

Happy to write any of these up properly if that would be useful. Unfassbar (talk) 06:23, 31 August 2026 (UTC)