GIS coaching for territorial management.
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…
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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…
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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…
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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…
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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,…
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Modeling uncertainty and gradual transitions in QGIS using the FuzzyAttributes plugin. Not everything in geography is black and white. However, GIS tools often impose binary choices. What about transition zones? What about criteria that are partially…
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