Things I learned the hard way: administrative boundaries are mess in software engineering. Similar to names (of people), and dates. Like literally all reasonable assumptions will be wrong.

What can go wrong when Google advertises to mix OpenStreetMap (see screenshot) with their own data via "Geospatial Reasoning"?

https://research.google/blog/geospatial-reasoning-unlocking-insights-with-generative-ai-and-multiple-foundation-models/

"Encode #spatial data as #topology in #Python!

With #topojson it is possible to reduce the size of your spatial data. Mostly by orders of magnitude."

https://mattijn.github.io/topojson/

ohsome-planet: Export OSM data and its history to GeoParquet: The GIScience Research Group at Heidelberg University and HeiGIT have released version 1.0.0 of #ohsome-planet, a tool for #cloudnative access to #OpenStreetMap (#OSM) data using the #GeoParquet format. Originally developed as an internal tool, it...
https://spatialists.ch/posts/2025/04-11-ohsome-planet-export-osm-data-and-its-history-to-geoparquet/ #GIS #GISchat #geospatial #SwissGIS

Postpass – a public OSM PostGIS instance

https://community.openstreetmap.org/t/postpass-a-public-osm-postgis-instance/128649
#OpenStreetMap #OSM #postpass #gis

Cape Town International Airport - Cape Town, South Africa

https://en.wikipedia.org/wiki/Cape_Town_International_Airport
https://www.openstreetmap.org/#map=13/-33.964802/18.601700

Oooh... satellite GIS data fun! #gis

Lviv International Airport - Lviv, Ukraine

https://en.wikipedia.org/wiki/Lviv_International_Airport
https://www.openstreetmap.org/#map=13/49.812500/23.956100

I hope it's not forgotten that rio-cat was the original program for concatenating #GIS simple features from vector datasets for use in UNIX pipelines. It's a thing that I'm proud of having developed and that sparks joy every time I use it.

https://fiona.readthedocs.io/en/stable/cli.html#cat
https://github.com/OSGeo/gdal/pull/12115

Sochi International Airport - Sochi, Russia

https://en.wikipedia.org/wiki/Sochi_International_Airport
https://www.openstreetmap.org/#map=13/43.449902/39.956600

Gerhard Mercator — the namesake of the Mercator projection — here’s an image I took last year from the original Globus “Atlas der Welt” (1595) housed in the Gerhard #Mercator Treasure Chamber in #duisburg . #Gis #gischat

uMap just released version 3.0, first one to officially support real-time collaborative editing. But also, very importantly: "a first version of a real undo/redo", which used to be a recurring problem when I ran training (a Ctrl + Z would undo all the changes you've made since the last save).
https://docs.umap-project.org/en/stable/changelog/#300-2025-04-07
#uMap #OSM #GIS #FLOSS

This map quality is insane. Esri / ArcGIS has really nice satellite tiles.

https://earthexplorer.usgs.gov/

Another remake of the famous "maintainer in Nebraska" strip, this time for #GIS

Original from #xkcd https://xkcd.com/2347/

(I am considering making a T-Shirt)

MapLibre March updates are here!

• Native & GL JS releases
• Rust support in progress
• Martin v0.16 adds style serving

Thanks to @MapTiler for joining as a Silver Sponsor!

Read more: https://maplibre.org/news/2025-04-04-maplibre-newsletter-march-2025/

Need to geocode massive address lists? Stadia Maps can help!

Our new guide shows how to process 100s to 1M+ locations quickly and accurately using our bulk API.

Learn more here: https://docs.stadiamaps.com/guides/getting-accurate-results-at-scale-with-bulk-geocoding/?utm_campaign=guide_bulk_geocoding&utm_source=mastodon&utm_medium=social

#GIS #geocoding
https://docs.stadiamaps.com/guides/getting-accurate-results-at-scale-with-bulk-geocoding/?utm_campaign=guide_bulk_geocoding&utm_source=mastodon&utm_medium=social

Recently, I taught a session on landscape metrics in R—covering how to quantify spatial patterns in landscapes.

Slides + exercises here:

https://jakubnowosad.com/rgis2025/output/landscape_metrics.html

St. Petersburg Clearwater International Airport - Pinellas Park, United States

https://en.wikipedia.org/wiki/St._Petersburg-Clearwater_International_Airport
https://www.openstreetmap.org/#map=13/27.910200/-82.687401

Just learned about #gbfs General Bikeshare Feed Specification #bike #geo #gis #gischat https://gbfs.org/

"#Geospatial #Python - Full Course for Beginners with #Geopandas"

https://www.youtube.com/watch?v=0mWgVVH_dos