- How to increase the resolution of Sentinel 2 images from 10 to 1 meter
First of all, let’s give credit where credit is due! I discovered this technique thanks to Franz’s blog, which I invite you to explore if you speak Spanish. To process Sentinel 2 images, we will use…
- Fuzzy aggregation of two raster layers with FuzzyAttributes V2
After the two articles on converting a raster to fuzzy values: We will sees dans cet article comment agréger deux rasters flous en prenant en compte la subjectivité de l’utilisateur. Settings window In the FuzzyAttributes plugin…
- Converting a class raster to a fuzzy raster in QGIS
In some cases, the data is not continuous (altitude, slope, distance, etc.), but discrete, i.e., consisting of classes. Each pixel then corresponds to a category: a soil type, land use, risk level, etc. These “categorical” rasters…
- Converting a raster into fuzzy values with FuzzyAttributes V2
Version 2 of FuzzyAttributes extends the plugin’s capabilities by directly integrating fuzzy transformation of rasters, in addition to vector attributes and text → fuzzy mapping. This allows you to work on continuous data (e.g., indices, altitudes,…
- Consultation and negotiation: the contribution of fuzzy logic
Consultation and negotiation: understanding, dialogue, building together In regional, environmental, or development projects, decisions can no longer be imposed unilaterally. Stakeholders—whether citizens, institutions, businesses, or associations—expect to be listened to, consulted, and involved. Two approaches are…
- PostGIS 3.6 released – 3D, raster, and topology take a leap forward
New version:
PostGIS 3.6.0 (Released September 2, 2025) PostGIS 3.6.0 has been available since September 2, 2025. It is designed to work with PostgreSQL 12 through 18 beta 3, requires GEOS 3.8+ (with optimizations for GEOS…
- Creating awareness maps with QGIS: the equivalent of the Above and Below style
Awareness maps in QGIS When an issue is relatively new, it is often useful to go through an awareness-raising phase. Maps play a key role in this process: they reveal worrying facts and draw the attention…
- From Boolean analysis to fuzzy logic in a GIS: a concrete example
Introduction In spatial analysis, criteria are often applied strictly: yes/no, inside/outside, above/below a threshold. But reality is rarely so clear-cut: is a municipality with 4,900 inhabitants really so different from another with 5,100? Fuzzy logic allows…
- Union in GIS: choosing between overlay, merge, unary union, and dissolve
Understanding the different types of unions in GIS Spatial union is one of the fundamental operations in geomatics. It allows you to combine multiple layers or entities to produce new geometries or enrich attributes. However, behind…
- Fuzzy logic and GIS (2/2): from transformation to aggregation of spatial data
In the first part of this series, we saw how fuzzy logic allows us to go beyond rigid thresholds by assigning each spatial entity a degree of membership between 0 and 1.We explored several membership functions,…