It's a Saturday so I took a break from software development to, err, develop software? Of course.

https://codeberg.org/pbarker/gpxtidy

gpxtidy is a little Rust program to tidy up GPX files for publication - it removes dates, times and personally identifying data so that they can be safely shared online. It simplifies the track by removing points that introduce less than a configurable error threshold. Finally it writes the result as either a GPX file or a GeoJSON LineString.

If you upload tracks of hikes, rides, runs or similar then this might be of interest to you.

I can't publish it to crates.io yet as it relies on an unreleased version of the gpx crate, but hopefully that will get fixed soon.

#OpenSource #Rust #GPX #GeoData

Friendly Reminder: Beim #GirlsDay am 3. April könnt ihr mit uns in die Welt der Geoinformatik eintauchen und eure eigene digitale Karte erstellen. 🗺️!

Technik (und Verpflegung) werden gestellt.

🚨 Wusstet ihr schon, dass ihr euch für den #girlsday von der Schule freistellen lassen könnt? 🚨

Formular auf unserer Website 👉 https://www.ioer.de/presse/aktuelles/girlsday-2026

#GirlsDay2025 #GeoData #Geoinformatik

@vhsdresden @UnischuleTUD @fffdresden

🧱 What can LEGO teach us about the world’s population? 🌍

At the Southampton Science & Engineering Festival, we’re turning colourful bricks into maps! Families can explore how scientists estimate populations, map communities, and plan resources through fun, hands-on activities.

If you’re in or around Southampton on Saturday, 14/03 - come build a population map with us!

👉️ https://www.worldpop.org/blog/build-a-population-map-with-lego-at-the-southampton-science-engineering-festival/

#SOTSEF #ScienceFestival #GeoData #GIS #STEMOutreach #Southampton

Measure your altitude above sea level—wherever you are. Altimeter 1.0 is out now.

https://www.thomasweibel.ch/alt/

#geography #gis #topography #opendata #ogd #geodata #webdev #webapp #html #javascript @spatialists @OpendataCH @geomob @clolsonus @JensWiesehahn @paulfoerster

How can open #geodata support better decisions in humanitarian response, infrastructure planning, and climate action?

In our latest blog post, we present five open datasets that support humanitarian aid, infrastructure planning, and climate research. Each dataset is free for everyone to explore. 🔍

🔗 https://buff.ly/XtrsABo
#OpenData #Geospatial #HumanitarianData #ClimateAction

Some fellow mastodonians suggested I made my altimeter web app work globally. I did.

https://www.thomasweibel.ch/alt/

Now, all you testers out there: Does it work in your location? Is it accurate? Suggestions?

#geography #gis #topography #opendata #ogd #geodata #opensource #openglam #glamhack #digitalhumanities #webdev #webapp #html #javascript #swisstopo @spatialists @OpendataCH @geomob @clolsonus @JensWiesehahn @paulfoerster

Altiswiss, a data-driven #altimeter for #Switzerland, now complete with a reset button and an additional numerical display.

https://www.thomasweibel.ch/altiswiss2/

#geography #gis #topography #opendata #ogd #geodata #opensource #openglam #glamhack #digitalhumanities #webdev #webapp #html #javascript #swisstopo @spatialists @OpendataCH @geomob

🚴‍♂️🌍 Et si on roulait ensemble vers les #GeoDataDays 2026 ? L’aventure #GeoDataDaysAVélo a démarré : https://geotribu.fr/articles/2026/2026-03-04_geodatadays_velo/

Cette année, on relance l’idée de rejoindre l’événement à vélo, seul ou en groupe !

🗺️ Consultez les parcours existants ou proposez le vôtre : https://umap.openstreetmap.fr/fr/map/gdd-a-velo_1366949#9/47.710686/1.785278

📅 Objectif : Arrivée à #Tours le 15 septembre 2026 – soyez de la partie !

🙏 @geojulien et @GabPoujol pour la relecture - J. Enfer pour l'affiche.

#GeoDataDaysAVélo #Géodata #Vélo #AventureCollective

for everyone who wants to refresh their knowledge about #Hausdorff distance and even wants learn about new developments, these blogposts by Martin Davis aka Dr. #JTS are great.

#gis #gischat #gistribe #geodata

https://lin-ear-th-inking.blogspot.com/2026/02/the-hausdorff-distance-challenge.html
https://lin-ear-th-inking.blogspot.com/2026/03/fast-hausdorff-distance-and.html