The Netherlands is striving to become greener, but where do you start if you don't know exactly how much greenery is already in place? A newly updated Base Map of Green and Paved Surfaces in the Climate Impact Atlas (KlimaatEffectAtlas) now provides the answer. With a resolution of just 25 centimeters, the map shows in remarkable detail how...
This year I had the honor of being recognized with the Spatial Impact Award 2025 by Atlas. It is both humbling and energizing to see my work in open-source GIS and water resources acknowledged in this way. For me, spatial analysis has always been more than technical workflows, it is about empowering people to understand their environment and...
Taking part in the #30DayMapChallenge is always a test of creativity and endurance, but November 2025 proved to be especially demanding. The month began with the grandeur of Carmina Burana concerts at MECC Maastricht, performed with Brabantkoor (I was a tenor in the choir) and the Jussen Brothers, and quickly unfolded into a whirlwind of...
FOSS4G Europe 2025 was organised in Mostar, Bosnia and Herzegovina from 14 - 20 July 2025. The first two days were packed with interesting workshops, followed by three days of inspiring talks from the amazing open source geo community. This blog presents my FOSS4G Europe 2025 journey.
FOSS4GNL 2025, held on July 2–3 in the stunning new Omnia building at Wageningen Campus was another great edition of FOSS4GNL with over 200 participants! Over two days, the Dutch open geospatial community gathered to share breakthroughs, build skills, and have a ridiculously good time.
On June 28th 2025, I had the pleasure of being interviewed by Safae Alaa for the To Open Doors I.Talk podcast, and our conversation went through my 25-year journey in GIS.
This past week, I had the incredible opportunity to attend the QGIS User Conference and Contributor Meeting in the beautiful city of Norrköping, Sweden. The event was held at the Visualization Center C, Cnema, and Campus Norrköping of Linköping University—an inspiring venue rich in industrial heritage and scenic waterways that provided the...
We recently transitioned from proprietary solutions to Nextcloud Private Cloud, hosted by TAB.Digital at a server in the Netherlands. The move was driven by our commitment to privacy, security, and digital sovereignty, and we're happy to share that the transition was smooth and seamless!
The instructions in the book QGIS for Hydrological Applications, 2nd Editon, were written for QGIS 3.22. Since then some features have changed. This blog gives an overview of the most important changes per chapter.
I'm happy to announce that my company QWAST-GIS will continue to be a Small Sustaining Member of QGIS in 2025!