QGIS User Conference 2026

Tag: qgis

From CAD to GIS: When you need to make the transition

Discover why and how to transition your engineering drawings from CAD to GIS for improved asset management, spatial querying, and real-world accuracy.
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NDVI vs EVI, SAVI, NDRE and NDWI: Formulas for QGIS

NDVI flattens out over dense canopy. EVI, SAVI, NDRE, NDWI and NDMI each fix a blind spot. Raster Calculator formulas and a measured test in Brazil.
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Satellite Image Resolution Compared: 30 m to 30 cm, Free vs Paid

8 sources from Landsat to Pléiades Neo, with price and revisit. On one suburb, 0.2% of buildings cover 16 pixels at 10 m and 96% at 50 cm, of 20,911 counted.
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Sentinel-2 vs Landsat 8 and 9: Bands, Resolution, Clear Days

10 m vs 30 m, 5-day vs 8-day revisit, 13 vs 11 bands. Over one year near Rennes, Sentinel-2 gave 53 clear days and Landsat 30, with waits up to 33 vs 79 days.
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Thoughts and Discussions on the Development of QGIS Plugins

A few weeks ago, Oslandia organized a webinar/roundtable discussion titled “Creating QGIS Plugins in 2026: Challenges, Expectations, and Concerns!” open to the international developer community.

The goal was to share our experiences as QGIS plugin developers—including our objectives, habits, and challenges—as well as to discuss the available tools.

This discussion was also a great opportunity to share our feedback as developers, identify needs related to QGIS plugin development, and explore ways to make the most of our development work.

If you missed the session, you can find the recording here: https://s.zoom.us/m/bPlTUNXA2

Julien Moura’s introductory presentation is also available!

As a key contributor to the open-source QGIS solution, Oslandia has been actively contributing to its development for over 15 years—from the QGIS core to the development of plugins such as CityForge and, more recently, QSunPotential.

If you’d like to discuss your challenges, difficulties, or ideas, feel free to contact us at: infos+qgis@oslandia.com

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Embed Interactive Maps on Websites with Kumoy - QGIS LAB by MIERUNE

Introduction When you show a QGIS map on a web page as an image, viewers cannot pan to the place they care about or zoom in for detail. Building a web map from scratch is another option, but it requir...
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ChatGPT for QGIS: What It Can and Can't Do, Tested

Can ChatGPT automate QGIS? I asked it for PyQGIS code on three real tasks and ran every script in QGIS. What worked, what failed without an error, and why.
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What Is a CRS in GIS? EPSG Codes and Fixing Wrong Layers

A CRS tells software where coordinates sit on Earth. Datums, EPSG codes, 4326 vs 3857, and a step-by-step fix for a layer that lands in the wrong place.
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What Is NDVI? Formula, Value Chart and the Sentinel-2 Trap

NDVI = (NIR - Red) / (NIR + Red), from -1 to 1. What each value range means, a season measured field by field, and the offset that turns 0.82 into 0.56.
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What Is PyQGIS? A First Script and a Chatbot Code Test

Where to run PyQGIS, a first script, and a test on six tasks: chatbot code always ran, but one result was silently wrong when given only layer names.
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