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

In this tutorial, we show you how to use Map Themes to create a seamless transition between different background maps and layer styles directly on your mobile device. You will learn how to define custom symbology for your survey layers and configure themes in QGIS using the eye icon in the Layers panel. By syncing these themes to the Mergin Maps mobile app, you can switch backgrounds and styles instantly while in the field. This ensures your data remains visible and clear, whether you are using standard topographic maps or high-resolution satellite imagery. Mergin Maps is an intuitive, open-source platform designed to take your QGIS projects into the field. It allows for seamless data synchronization and works entirely offline, making it the perfect tool for capturing geodata in any environment.

GRASS Community Meeting 2026 is coming to San Michele all’Adige, Trentino, Italy. July 11–19, 2026.

The week will focus on the Python API and CMake build system transitions, documentation, and interoperability with QGIS, R and more.

Add your name and find logistics, venue details, and the agenda on the wiki:
https://grasswiki.osgeo.org/wiki/GRASS_Community_Meeting_San_Michele_2026

Support makes participation possible for more contributors. Donate via NumFOCUS:
https://numfocus.org/donate-to-grass
https://grasswiki.osgeo.org/wiki/GRASS_Community_Meeting_San_Michele_2026

📢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

Vandaag staan @terglobo en ik op de HAS #GeoExperience in 's-Hertogenbosch met een #QGIS‑stand. We geven ook een workshop over #pointcloud processing & #3D #visualisatie in QGIS.

Niet erbij? De workshop is gratis online te volgen op @gisocw: https://courses.gisopencourseware.org/course/view.php?id=82

Er staan nóg meer NL‑cursussen op GIS OpenCourseWare. Zie: https://courses.gisopencourseware.org/course/index.php?categoryid=8

@qgisnl

I’ve published a new video showing how the AI Edit plugin by #TerraLab can be used to visualise spatial planning scenarios in #QGIS.

From replacing an airport to simulating floods, adding green roofs, reopening canals, or generating a Dutch polder, it’s all there, with impressive visual results.

▶️ QwastTube: https://videos.qwast-gis.com/w/iUHsR4ceNzcP3d1B287sJ9

#QGIS #GeoAI #GenAI #SpatialPlanning #GIS

🗓Save the date: 8–9 juli!
Na 9 jaar keert #FOSS4GNL terug naar Groningen, waar het in 2017 begon.

Twee dagen vol #opensource geo: hands‑on workshops + een dag presentaties voor developers, toepassers, beheerders en beleidsmakers.

Samen met de @Jantina_Tammes_School bouwen @osgeonl en @qgisnl aan het programma & side‑events. Ideeën en helpende handen zijn welkom!

QGIS-US is hosting a virtual meeting next week!

Tuesday, April 21 at noon EDT.

Dr. Qiusheng Wu (University of Tennessee) will be speaking about his GeoAI plugin for QGIS that provides access to several tools for image segmentation, object detection, and feature extraction. #QGIS

https://www.qgis-us.org/2026/04/17/qgis-virtual-meeting-april-21st-2026-at-1200-est/

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

#WebODM has officially split from #OpenDroneMap.
Official announcement from WebODM https://webodm.org/blog/announcement/

I made a short video showing the full workflow:
💻 Install WebODM with the new native installers
📸 import drone images
⚙️ process (orthomosaic, DSM, point cloud, 3D model)
🖼️ view in 2D/3D
⬇️ download results
🗺️ open in QGIS

If you want a user‑friendly, #opensource alternative to proprietary photogrammetry tools, WebODM is highly recommended.

🎥 Video: https://videos.qwast-gis.com/w/2KjiiJtEXEqz9qCSQnG5Ug

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

New video: train custom #deeplearning models without coding using the #QGIS Deepness plugin, #Roboflow & #Ultralytics.
Watch it on QwastTube: https://videos.qwast-gis.com/w/ucEzYZ8tSVCb9eDBRQUx4j

The recording of Wednesday’s webinar “QGIS 4 for Water: What’s New, What’s Next?” is now available on the YouTube channel of the Australian Water School! With @geomenke, @yonas and myself.
📹 Watch it here: https://youtu.be/vnHxLHHz-ZQ
#QGIS #GIS #FOSS4G #OSGeo

📣 #FOSS4G volunteers, we need you!
#FOSS4GE2026 will take place in Timișoara between the 29th-3rd of July, 2026 and we need you to help us make this the best experience for the attending community.
🏷️ We cover your registration fee, in return for your contribution to the conference. Find out more about the process here: https://2026.europe.foss4g.org/volunteers/
📅 Those interested to volunteer should submit the Google form below before the 30𝐭𝐡 𝐨𝐟 𝐀𝐩𝐫𝐢𝐥: https://docs.google.com/forms/u/1/d/e/1FAIpQLSex2DBOFV7GzhPwzMXsx26jW6vytK_jHfJnfpEjVTgRGkTiXA/viewform
Let's do this together!

Capturing real-world data is often about more than just points on a map-sometimes you need the full picture (literally). In this tutorial, we dive into the Photo Attachment widget to help you seamlessly integrate photography into your Mergin Maps field surveys. Whether you're looking to snap a single high-res photo or organize thousands of images into subfolders, this video covers the essential configurations in QGIS to get your mobile forms field-ready.

📢 Mergin Maps tutorial videos are now on #PeerTube!

If you use @merginmaps, the #opensource, field data collection tool built on #QGIS, you can now watch the video tutorials on #QwastTube:

🔗 https://videos.qwast-gis.com/c/merginmaps/videos?sort=-originallyPublishedAt

#Fediverse handle: @merginmaps@videos.qwast-gis.com

Great for anyone who values #digitalsovereignty and privacy‑respecting platforms!

This video reviews the AI Segmentation by TerraLab plugin. The plugin uses Meta's Segment Anything Model to segment polygons from a GeoTIFF layer in QGIS. QGIS version: 3.44 [Plugin homepage](https://www.terra-lab.ai/ai-segmentation) Data: [Beeldmateriaal Nederland, Dataroom](https://www.beeldmateriaal.nl/dataroom) 0:00 Introduction 0:24 Installation 1:53 Segmentation of individual polygons 3:48 Batch mode 5:21 Conclusion #QGIS #GeoAI #segmentation #gis

FOSS4G 2026 Travel Grant Program is Now Open
https://2026.foss4g.org/en/register/travel-grant/

#foss4g #osgeo #GISChat

Getting ready for the #QGIS User Conference 2026?
We’ve just added conference rates to the recommended accommodation options in Laax.

👉 https://uc2026.qgis.org/accommodation

We’re looking forward to bringing the QGIS community together in the Swiss Alps — see you in LAAX! ⛰️💚

#QGISUC2026 #QGISUC #GISChat