#foss4g — Public Fediverse posts

confused about #postgis ST_NPoints with polygons, because a triangle apparently has 4 points.

SELECT ST_NPoints(ST_GeomFromText('POLYGON ((0 0, 0 1, 1 0, 0 0 ))'));

From a technical point it makes sense, but it is also quite unintuitive, because normal people on the street would definitely say a triangle has 3 points ...

#gischat #gistribe #osgeo #foss4g

🎉 Our Mapper of the Month for May is @lishhhhliaaak from India 🇮🇳

Nitya supported the mapathon communications with @thefossclub. She is also one of the top mappers for the India flood mapping projects.

We welcomed Nitya to the #UNMappers community and asked about her experience & motivations contributing to open geodata while being a student and active part of the #FOSS community. Read our interview👉 https://tinyurl.com/MOTM0526

#UNMaps #OpenStreetMap #opendata #FOSS4G #opendata #MapperoftheMonth

🤔 Wondering if your idea for a FOSS4G NA talk is “good enough”?

Great talks share lessons learned, useful workflows, or practical demos others can use. Submit your presentation proposal before the deadline.

https://www.foss4gna.org/news-2026/what-makes-a-good-talk

#FOSS4G #GIS #geospatial #CNG #GISChat

FOSS4G Hiroshima is fast approaching! If you are interested in pygeoapi or Geopython, please consider signing up for the following workshops:

- Diving into pygeoapi: https://talks.osgeo.org/foss4g-2026-workshop/talk/QT3JPM

- Doing Geospatial in Python: https://talks.osgeo.org/foss4g-2026-workshop/talk/DZZ83Y

Full conference information is available at https://2026.foss4g.org

@osgeo #foss4g #geopython #pygeoapi

FOSS4G Hiroshima is fast approaching! If you are interested in pygeoapi or Geopython, please consider signing up for the following workshops:

- Diving into pygeoapi: https://talks.osgeo.org/foss4g-2026-workshop/talk/QT3JPM

- Doing Geospatial in Python: https://talks.osgeo.org/foss4g-2026-workshop/talk/DZZ83Y

Full conference information is available at https://2026.foss4g.org

@osgeo #foss4g #geopython #pygeoapi

FOSS4G Hiroshima is fast approaching! If you are interested in pygeoapi or Geopython, please consider signing up for the following workshops:

- Diving into pygeoapi: https://talks.osgeo.org/foss4g-2026-workshop/talk/QT3JPM

- Doing Geospatial in Python: https://talks.osgeo.org/foss4g-2026-workshop/talk/DZZ83Y

Full conference information is available at https://2026.foss4g.org

@osgeo #foss4g #geopython #pygeoapi

FOSS4G Hiroshima is fast approaching! If you are interested in pygeoapi or Geopython, please consider signing up for the following workshops:

- Diving into pygeoapi: https://talks.osgeo.org/foss4g-2026-workshop/talk/QT3JPM

- Doing Geospatial in Python: https://talks.osgeo.org/foss4g-2026-workshop/talk/DZZ83Y

Full conference information is available at https://2026.foss4g.org

@osgeo #foss4g #geopython #pygeoapi

FOSS4G Hiroshima is fast approaching! If you are interested in pygeoapi or Geopython, please consider signing up for the following workshops:

- Diving into pygeoapi: https://talks.osgeo.org/foss4g-2026-workshop/talk/QT3JPM

- Doing Geospatial in Python: https://talks.osgeo.org/foss4g-2026-workshop/talk/DZZ83Y

Full conference information is available at https://2026.foss4g.org

@osgeo #foss4g #geopython #pygeoapi

❓️Werk je in de publieke sector met #GIS? Jouw ervaring telt!
Het QGIS Trainer Network voert een internationale enquête uit over het gebruik en onderwijs van open‑source GIS. De resultaten worden gepresenteerd op de QGIS User Conference 2026 in Laax.
👉 Vul de enquête in: https://nx84716.your-storageshare.de/apps/forms/s/S7GbmdS3PsWYCcJexZgQdPn9

#QGIS #OSGeo #FOSS4G

Public sector #GIS users, your input matters!
The QGIS Trainer Network is running an international survey on how public institutions use and teach open‑source GIS. Results will be presented at the QGIS User Conference 2026 in Laax.
👉 Take the survey here: https://nx84716.your-storageshare.de/apps/forms/s/yZGamxYmwoSFcN9GmwymcBcs

#QGIS #OSGeo #OpenSource #FOSS4G

📢Op 8–9 juli is er weer #FOSS4GNL, dit jaar in Groningen. De Call for Proposals staat open! Wij zijn er uiteraard ook weer bij.

Werk je met #opensource #GIS? Dien je voorstel in voor een presentatie, workshop of rondetafelgesprek. Makers én gebruikers zijn welkom: van slimme scripts tot praktijkcases rond klimaat, water, ecologie, milieu, mobiliteit, #OpenData en #DigitaleSoevereiniteit.

👉 Indienen kan t/m 15 mei: https://pretalx.com/foss4gnl/cfp

@osgeonl #QGIS #FOSS4GNL #FOSS4G #QGISNL

pygeoapi 0.23.3 security release available.

Please see the release announcement at https://github.com/geopython/pygeoapi/releases/tag/0.23.3 for more information.

@osgeo @opengeospatial #ogcapi #foss4g

pygeoapi 0.23.3 security release available.

Please see the release announcement at https://github.com/geopython/pygeoapi/releases/tag/0.23.3 for more information.

@osgeo @opengeospatial #ogcapi #foss4g

pygeoapi 0.23.3 security release available.

Please see the release announcement at https://github.com/geopython/pygeoapi/releases/tag/0.23.3 for more information.

@osgeo @opengeospatial #ogcapi #foss4g

pygeoapi 0.23.3 security release available.

Please see the release announcement at https://github.com/geopython/pygeoapi/releases/tag/0.23.3 for more information.

@osgeo @opengeospatial #ogcapi #foss4g

pygeoapi 0.23.3 security release available.

Please see the release announcement at https://github.com/geopython/pygeoapi/releases/tag/0.23.3 for more information.

@osgeo @opengeospatial #ogcapi #foss4g

Gisteren stonden we met een #QGIS‑stand op de HAS #GeoExperience. Mooi om te zien hoeveel interesse er is in QGIS en #opensource #geo!

@hansakwast & @terglobo gaven een workshop over #AHN‑puntenwolken en #3D‑visualisatie in QGIS. Het "vliegen" in de 3D‑view viel duidelijk in de smaak!

Dank aan alle bezoekers voor de fijne gesprekken!🫶🏼

#GIS #OSGeo #FOSS4G

Watch the recording of this session:
https://www.youtube.com/watch?v=ohtuR4MRKcQ

Mapping Project: https://tasks.hotosm.org/projects/48681

Get Involved:
- UN Mappers: https://maps.un.org
- The FOSS Club: https://linktr.ee/thefossclub

#UNMaps #UNMappers #Openstreetmap FloodMapping #YamunaBasin #humanitarianmapping #mapping #openmapping #foss #foss4g #opensource #opendata #communitymapping

Watch the recording of this session:
https://www.youtube.com/watch?v=ohtuR4MRKcQ

Mapping Project: https://tasks.hotosm.org/projects/48681

Get Involved:
- UN Mappers: https://maps.un.org
- The FOSS Club: https://linktr.ee/thefossclub

#UNMaps #UNMappers #Openstreetmap FloodMapping #YamunaBasin #humanitarianmapping #mapping #openmapping #foss #foss4g #opensource #opendata #communitymapping

Watch the recording of this session:
https://www.youtube.com/watch?v=ohtuR4MRKcQ

Mapping Project: https://tasks.hotosm.org/projects/48681

Get Involved:
- UN Mappers: https://maps.un.org
- The FOSS Club: https://linktr.ee/thefossclub

#UNMaps #UNMappers #Openstreetmap FloodMapping #YamunaBasin #humanitarianmapping #mapping #openmapping #foss #foss4g #opensource #opendata #communitymapping

Watch the recording of this session:
https://www.youtube.com/watch?v=ohtuR4MRKcQ

Mapping Project: https://tasks.hotosm.org/projects/48681

Get Involved:
- UN Mappers: https://maps.un.org
- The FOSS Club: https://linktr.ee/thefossclub

#UNMaps #UNMappers #Openstreetmap FloodMapping #YamunaBasin #humanitarianmapping #mapping #openmapping #foss #foss4g #opensource #opendata #communitymapping

Watch the recording of this session:
https://www.youtube.com/watch?v=ohtuR4MRKcQ

Mapping Project: https://tasks.hotosm.org/projects/48681

Get Involved:
- UN Mappers: https://maps.un.org
- The FOSS Club: https://linktr.ee/thefossclub

#UNMaps #UNMappers #Openstreetmap FloodMapping #YamunaBasin #humanitarianmapping #mapping #openmapping #foss #foss4g #opensource #opendata #communitymapping

I just passed 35K subscribers on my YouTube channel and I'm grateful for everyone following my open‑source geo work.

But for those who prefer to avoid big tech: my videos are also published on #QwastTube, my own #PeerTube instance.

▶️ QwastTube: https://videos.qwast-gis.com/
▶️ YouTube (if you still use it): https://www.youtube.com/@HansvanderKwast

#FOSS4G #OpenSource #PeerTube #DigitalSovereignty #QGIS #GIS #WebODM #PCRaster #RemoteSensing

📅 19th April
⏰ 1:30 PM IST
🌐 Online (Jitsi)

🔗 Join here:
https://meet.jit.si/moderated/6b7056c5920b29cae807ce5fcff054f89d7e9cd5455a8126f9d974d27b5fefb0

💡 No prior experience required, we’ll guide you step by step!
🙌 Open to students, developers, and anyone passionate about creating impact!

Let’s come together to map, learn, and build resilience 🌍✨

#UNMaps #UNMappers #OpenStreetMap #humanitarianmapping #mapping #openmapping #foss #foss4g #opensource

📅 19th April
⏰ 1:30 PM IST
🌐 Online (Jitsi)

🔗 Join here:
https://meet.jit.si/moderated/6b7056c5920b29cae807ce5fcff054f89d7e9cd5455a8126f9d974d27b5fefb0

💡 No prior experience required, we’ll guide you step by step!
🙌 Open to students, developers, and anyone passionate about creating impact!

Let’s come together to map, learn, and build resilience 🌍✨

#UNMaps #UNMappers #OpenStreetMap #humanitarianmapping #mapping #openmapping #foss #foss4g #opensource

📅 19th April
⏰ 1:30 PM IST
🌐 Online (Jitsi)

🔗 Join here:
https://meet.jit.si/moderated/6b7056c5920b29cae807ce5fcff054f89d7e9cd5455a8126f9d974d27b5fefb0

💡 No prior experience required, we’ll guide you step by step!
🙌 Open to students, developers, and anyone passionate about creating impact!

Let’s come together to map, learn, and build resilience 🌍✨

#UNMaps #UNMappers #OpenStreetMap #humanitarianmapping #mapping #openmapping #foss #foss4g #opensource

📅 19th April
⏰ 1:30 PM IST
🌐 Online (Jitsi)

🔗 Join here:
https://meet.jit.si/moderated/6b7056c5920b29cae807ce5fcff054f89d7e9cd5455a8126f9d974d27b5fefb0

💡 No prior experience required, we’ll guide you step by step!
🙌 Open to students, developers, and anyone passionate about creating impact!

Let’s come together to map, learn, and build resilience 🌍✨

#UNMaps #UNMappers #OpenStreetMap #humanitarianmapping #mapping #openmapping #foss #foss4g #opensource

📅 19th April
⏰ 1:30 PM IST
🌐 Online (Jitsi)

🔗 Join here:
https://meet.jit.si/moderated/6b7056c5920b29cae807ce5fcff054f89d7e9cd5455a8126f9d974d27b5fefb0

💡 No prior experience required, we’ll guide you step by step!
🙌 Open to students, developers, and anyone passionate about creating impact!

Let’s come together to map, learn, and build resilience 🌍✨

#UNMaps #UNMappers #OpenStreetMap #humanitarianmapping #mapping #openmapping #foss #foss4g #opensource

🌊 Mapping Resilience Across the Yamuna Basin 🗺️

A joint initiative by #UNMappers and The FOSS Club (Delhi Technical Campus).

This Flood-Prone Villages Mapping Drive aims to improve disaster preparedness across vulnerable regions of the Yamuna Basin.

Learn to map buildings, roads, and critical infrastructure using #OpenStreetMap to support responders with accurate, real time data during flood situations.

#UNMaps #humanitarianmapping #mapping #openmapping #foss #foss4g #opensource

🌊 Mapping Resilience Across the Yamuna Basin 🗺️

A joint initiative by #UNMappers and The FOSS Club (Delhi Technical Campus).

This Flood-Prone Villages Mapping Drive aims to improve disaster preparedness across vulnerable regions of the Yamuna Basin.

Learn to map buildings, roads, and critical infrastructure using #OpenStreetMap to support responders with accurate, real time data during flood situations.

#UNMaps #humanitarianmapping #mapping #openmapping #foss #foss4g #opensource

🌊 Mapping Resilience Across the Yamuna Basin 🗺️

A joint initiative by #UNMappers and The FOSS Club (Delhi Technical Campus).

This Flood-Prone Villages Mapping Drive aims to improve disaster preparedness across vulnerable regions of the Yamuna Basin.

Learn to map buildings, roads, and critical infrastructure using #OpenStreetMap to support responders with accurate, real time data during flood situations.

#UNMaps #humanitarianmapping #mapping #openmapping #foss #foss4g #opensource

🌊 Mapping Resilience Across the Yamuna Basin 🗺️

A joint initiative by #UNMappers and The FOSS Club (Delhi Technical Campus).

This Flood-Prone Villages Mapping Drive aims to improve disaster preparedness across vulnerable regions of the Yamuna Basin.

Learn to map buildings, roads, and critical infrastructure using #OpenStreetMap to support responders with accurate, real time data during flood situations.

#UNMaps #humanitarianmapping #mapping #openmapping #foss #foss4g #opensource

🌊 Mapping Resilience Across the Yamuna Basin 🗺️

A joint initiative by #UNMappers and The FOSS Club (Delhi Technical Campus).

This Flood-Prone Villages Mapping Drive aims to improve disaster preparedness across vulnerable regions of the Yamuna Basin.

Learn to map buildings, roads, and critical infrastructure using #OpenStreetMap to support responders with accurate, real time data during flood situations.

#UNMaps #humanitarianmapping #mapping #openmapping #foss #foss4g #opensource

New open course at @gisocw! Learn collecting ground truth in the field with @merginmaps, #AI-assisted #segmentation of ground truth polygons with the AI Segmentation plugin by #TerraLab and the full workflow from downloading #Sentinel-2 data, Random Forest classification & accuracy assessment using the Semi-Automatic Classification plugin in #QGIS.

🔗 https://courses.gisopencourseware.org/

#GIS #RemoteSensing #OSGeo #FOSS4G #MachineLearning

Post-Austin/CAST I'm touring #ASynesthetesAtlas through AZ, NM, & CO. First up: Sat, 4 Apr 2026 in #Tucson @ #WaveArchive, a loaded program w/locals #JeffreyGordonEvans, #HannahJoyce , & Steev Hise (@detritus ) in various configs.

#experimental #improvisation #expandedCinema
#maps #cartography #OpenStreetMap #foss4g

pygeoapi 0.23.0 released! https://github.com/geopython/pygeoapi/releases/tag/0.23.0

New support for OGC API - Pub/Sub, and numurous improvement and fixes for EDR, Maps and more.

Thank you to the pygeoapi community all the contriubutions!

@osgeo @opengeospatial #ogcapi #foss4g

pygeoapi 0.23.0 released! https://github.com/geopython/pygeoapi/releases/tag/0.23.0

New support for OGC API - Pub/Sub, and numurous improvement and fixes for EDR, Maps and more.

Thank you to the pygeoapi community all the contriubutions!

@osgeo @opengeospatial #ogcapi #foss4g

pygeoapi 0.23.0 released! https://github.com/geopython/pygeoapi/releases/tag/0.23.0

New support for OGC API - Pub/Sub, and numurous improvement and fixes for EDR, Maps and more.

Thank you to the pygeoapi community all the contriubutions!

@osgeo @opengeospatial #ogcapi #foss4g

pygeoapi 0.23.0 released! https://github.com/geopython/pygeoapi/releases/tag/0.23.0

New support for OGC API - Pub/Sub, and numurous improvement and fixes for EDR, Maps and more.

Thank you to the pygeoapi community all the contriubutions!

@osgeo @opengeospatial #ogcapi #foss4g

How did Calgary respond to the wet summer of 2025?
Here’s the median summer NDVI map derived from Sentinel-2 imagery.
You can clearly see the Bow River corridor, Nose Hill Park, and the contrast between established tree-rich communities and newer developments.

Full analysis here:
https://www.datastory.org.ua/how-much-greener-is-calgary-in-2025/

#Geospatial #NDVI #UrbanClimate #Calgary #RStats #GreennessOfCalgary #yyc #Apberta #QGIS #foss4g #EnvironmentalMonitoring #UrbanHealth

Celebrating 8 years of pygeoapi! Here's a wayback playback to the very first commits of the project:

https://github.com/geopython/pygeoapi/commit/17edb346a177c9cfdb1d4a7494a029c9e64ed89e

https://github.com/geopython/pygeoapi/commit/fa65aa1c1fa16925a82777d02e0def51ed6b9220

https://github.com/geopython/pygeoapi/commit/1ea1984773990c235a48213c7eb288a94183825f

Thank you to the community for all of your valuable contributions! 🎉 🎂 💘

#foss4g #ogcapi @osgeo @opengeospatial

Celebrating 8 years of pygeoapi! Here's a wayback playback to the very first commits of the project:

https://github.com/geopython/pygeoapi/commit/17edb346a177c9cfdb1d4a7494a029c9e64ed89e

https://github.com/geopython/pygeoapi/commit/fa65aa1c1fa16925a82777d02e0def51ed6b9220

https://github.com/geopython/pygeoapi/commit/1ea1984773990c235a48213c7eb288a94183825f

Thank you to the community for all of your valuable contributions! 🎉 🎂 💘

#foss4g #ogcapi @osgeo @opengeospatial

Celebrating 8 years of pygeoapi! Here's a wayback playback to the very first commits of the project:

https://github.com/geopython/pygeoapi/commit/17edb346a177c9cfdb1d4a7494a029c9e64ed89e

https://github.com/geopython/pygeoapi/commit/fa65aa1c1fa16925a82777d02e0def51ed6b9220

https://github.com/geopython/pygeoapi/commit/1ea1984773990c235a48213c7eb288a94183825f

Thank you to the community for all of your valuable contributions! 🎉 🎂 💘

#foss4g #ogcapi @osgeo @opengeospatial

Celebrating 8 years of pygeoapi! Here's a wayback playback to the very first commits of the project:

https://github.com/geopython/pygeoapi/commit/17edb346a177c9cfdb1d4a7494a029c9e64ed89e

https://github.com/geopython/pygeoapi/commit/fa65aa1c1fa16925a82777d02e0def51ed6b9220

https://github.com/geopython/pygeoapi/commit/1ea1984773990c235a48213c7eb288a94183825f

Thank you to the community for all of your valuable contributions! 🎉 🎂 ❤️ 💘

#foss4g #ogcapi @osgeo @opengeospatial

Celebrating 8 years of pygeoapi! Here's a wayback playback to the very first commits of the project:

https://github.com/geopython/pygeoapi/commit/17edb346a177c9cfdb1d4a7494a029c9e64ed89e

https://github.com/geopython/pygeoapi/commit/fa65aa1c1fa16925a82777d02e0def51ed6b9220

https://github.com/geopython/pygeoapi/commit/1ea1984773990c235a48213c7eb288a94183825f

Thank you to the community for all of your valuable contributions! 🎉 🎂 💘

#foss4g #ogcapi @osgeo @opengeospatial

#OpenLayers v10.8 released
#geodata #gis #gischat #osgeo #foss4g #webmap #ogc
https://github.com/openlayers/openlayers/releases/tag/v10.8.0

#OpenLayers v10.8 released
#geodata #gis #gischat #osgeo #foss4g #webmap #ogc
https://github.com/openlayers/openlayers/releases/tag/v10.8.0

#OpenLayers v10.8 released
#geodata #gis #gischat #osgeo #foss4g #webmap #ogc
https://github.com/openlayers/openlayers/releases/tag/v10.8.0

#OpenLayers v10.8 released
#geodata #gis #gischat #osgeo #foss4g #webmap #ogc
https://github.com/openlayers/openlayers/releases/tag/v10.8.0

#OpenLayers v10.8 released
#geodata #gis #gischat #osgeo #foss4g #webmap #ogc
https://github.com/openlayers/openlayers/releases/tag/v10.8.0