Binary partitioning with k-d trees is silly amazing. And with OSM data in radians and pretending the planet is a perfect sphere, scikit-learn's BallTree works wonderfully for quickly finding things nearby some reference point.

Like how far away the nearest bicycle_parking is for every building in a city.

https://github.com/ellieayla/bicycle-parking-distance/blob/main/distance_from_buildings_to_nearest_bicycle_parking.geojson

#IMadeAThing #python #osm #overpassql

When running a query with "out count;" in Overpass Ultra, where is that count actually displayed? I can't find any ui button to switch from the map view to response xml/json (like overpass turbo has).

https://overpass-ultra.us/#q=PQKgUAKgFglgzgAngghgOwQUwB4oLYAOANpggPIBumATgSnIgI4CuNAngHSTVtIAuCAPbMBAI14FqmBjDQBzBHyikASswyiRfQRhSjBVAIRgQwMAG1R+7AC4A3nauDsAXxcBdANxgAFGDQA7ub4mGgwfGzuwXih4WyGALyiMADGbCkkAPp01ADWsnJe-kFwUIIERYHmyihESikoUpVBaCh8zNS1SZgoKVBFAJTewgIpwmh8nkA

@trailstash

#overpassultra #overpassql #osm

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: https://pretix.entropia.de/entropia/gpn23-workshops/89/

#gpn #osm #osint #overpass #overpassql #overpassturbo #overpassultra

Oh dang, my #introduction post is waaay out of date now. Let's do it again!

I have a #MastersDegree in #ComputerScience and #ComputerEngineering. I went to #NMU for undergrad and #MSU for my graduate degree. I currently work at #UChicago for the #TMWCenter, which focuses on helping young children acquire language (and therefore other learning skills) faster.

In my spare time, I develop #OpenSourceSoftware such as

• a library to talk to #ManifoldMarkets from native #Python
• a #PredictionMarket manager using the above
• a #transpiler from a subset of Python to #OpenStreetMaps's #OverpassQL
• bug fixes to many other projects, including #mypy, #base58, #attrs, #CPython, & more

I spend a fair bit of my time these days on #MathResearch, specifically into the #ThueMorse Sequence and its extensions.

I'm also a hobbyist editor on OpenStreetMap.

#Demisexual, #transfem, and happily engaged to my #enby sweetheart.

We have two cats: #OpheTheLoaf and #MayalaranTheCat (yes, from #StormlightArchive)

#queer #Chicago