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#OverpassTurbo

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I'm giving a workshop about #OpenStreetMap's Overpass query language on Saturday evening at #gpn23

It's a very powerful and useful tool, allowing for things such as custom queries, maps, statiscs, OSINT, or finding mistakes in OSM's data.

Unfortunately it's not the most intuitive thing, but we'll get you there during the workshop.

There are limited seats available and registration is mandatory: pretix.entropia.de/entropia/gp

pretix.entropia.deQuerying OpenStreetMap with Overpass-QLSat, June 21st, 2025
#gpn#osm#osint

A solid 24-hour sprint later -- I had to wrangle data from tables in PDFs to get a solid baseline to work with (#csv here: pastebin.com/JGLxQMbT) -- and I've got all of the polling stations for tomorrow's #election in Tarrant county mapped out in #osm #OpenStreetMap :D

overpass-turbo.eu/s/23ok

I experimented a bit within the polling_station:* namespace. Thinking I might be settling into a pattern, at least for #Texas. I dunno if I want to build up explicit relations between polling places and their (typical) associated buildings/areas or not. So for now, I chucked the relation data in a tag instead.

Ideally, future elections won't be such a pain to get bootstrapped; most polling stations tend to stay the same across elections.

Alrighty. Several hours later, and I have Tarrant County's updated early voting locations :D

Overpass-turbo query: overpass-turbo.eu/s/21qx

Actual location info from county (can match up the numbers on the map to addresses): tarrantcountytx.gov/content/da

And a reddit post in the FortWorth subreddit: reddit.com/r/FortWorth/comment

#reddit #pdf #OverpassTurbo #OSM #OpenStreetMap #OpenData #FortWorth #Tarrant #dfw #txpol #uspol

So far, I only have locations that serve (at least) as early voting centers. There are several more pages of day-of voting centers that I could conceivably add. I'm debating building a small, static, mobile website with #Leaflet to perhaps make a "show me my closest voting station" feature, and maybe a "schedule my voting time" feature that spits out an ical file or something. The opening hours are all there in the OSM data.

(Annoying sidenote: most college/university locations are either early vote only, election day only, or not open at all :()

Pas moyen de remettre la main dessus, j'avais vu passer des requêtes #OverpassTurbo pour rapidement aller piocher sur #OpenStreetMap des données genre les aménagements cyclables, et mettre en évidence une zone tampon autour. Un peu d'aide ? C'est du CSS basique mais ça dépasse mes compétences, et pas envie de sortir QGIS pour ça

Continued thread

The Bing ML buildings data is from this GitHub repo and first released in 2012: github.com/microsoft/IdMyPhBui

I used the following tools/services:
▪︎ @geofabrik for the OSM buildings
▪︎ #OverpassTurbo for extracting clipping polygons from OSM
▪︎ Osmosis for filtering the OSM buildings
▪︎ @qgis #QGIS for GeoJSON clipping and data conversion
▪︎ A couple of hand-coded Perl scripts for data manipulation
▪︎ #TurfJS
▪︎ #LeafletJS for rendering
▪︎ H3 for hexbinning
▪︎ @GIMP #GIMP for final map prep

🧵 3/4

GitHubGitHub - microsoft/IdMyPhBuildingFootprints: ML generated building footprints for Indonesia, Malaysia, and PhilippinesML generated building footprints for Indonesia, Malaysia, and Philippines - microsoft/IdMyPhBuildingFootprints
Continued thread

Data and image sources:
▪︎ #OpenStreetMap (ODbL 1.0) for the basemap (via CARTO Positron) and diocese boundaries
▪︎ #Wikidata (CC0) for the cathedral coordinates
▪︎ #Mozilla (CC BY 4.0) for the church icon
▪︎ Diocesan coats-of-arms from commons.wikimedia.org/wiki/Cat

Tools used:
▪︎ #OverpassTurbo for extracting OSM data
▪︎ HTML5 + #Leaflet for map rendering
▪︎ #GIMP for final composing and labels

🧵 2/2

commons.wikimedia.orgCategory:Coats of arms of dioceses of the Philippines - Wikimedia Commons

L'anno scorso mia moglie per #ferragosto voleva fare un pic-nic, ma non conoscendo bene la zona dove ci trovavamo, mi affidai ai miei potenti mezzi #opensource .

Grazie a #openstreetmap e #overpassturbo ( overpass-turbo.eu/ ) usando il tag [amenity=bbq] all'interno dell'area visualizzata sulla mappa, mi apparvero tutti i braceri.
La POTENZA DELL' OPENSOURCE mi ha salvato il Ferragosto.

overpass-turbo.euoverpass turboA web based data mining tool for OpenStreetMap which runs any kind of Overpass API query and shows the results on an interactive map.