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Author: Atilio Francois

10 September 20258 September 2025 Atilio Francois No Comments
  • QGis

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…

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4 September 202524 August 2025 Atilio Francois No Comments
  • Plugin
  • QGis

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,…

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1 September 20251 September 2025 Atilio Francois No Comments
  • Logique floue
  • Plugin
  • QGis

Fuzzy logic and GIS (1/2): an alternative to all-or-nothing for geographic analysis

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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25 August 202524 August 2025 Atilio Francois No Comments
  • QGis

Exporting a QGIS layout to SVG: uses, limitations, and solutions

Exporting to SVG (Scalable Vector Graphics) from QGIS allows you to produce high-quality vector maps for printing or graphic editing in software such as Inkscape, Illustrator, or Affinity Designer. It is an interesting alternative to PDF,…

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18 August 20257 August 2025 Atilio Francois No Comments
  • Plugin
  • QGis

Associating points with their municipality or zone: simple spatial joins with MMQGIS

When you have a layer of points (field surveys, geocoded addresses, incidents, observations, etc.) and a polygon layer (municipalities, sectors, zones), it is often useful to know which zone each point is located in. This is…

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11 August 20257 August 2025 Atilio Francois No Comments
  • Plugin
  • QGis

Geocoding place names and finding an address from GPS coordinates with QGIS + MMQGIS

In a previous article, we saw how to geocode complete addresses with the MMQGIS plugin. Today, we will go further with two very practical use cases, still without coding: 1. Geocoding places based on their names…

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Recent articles

  • Union in GIS: choosing between overlay, merge, unary union, and dissolve
  • Fuzzy logic and GIS (2/2): from transformation to aggregation of spatial data
  • Fuzzy logic and GIS (1/2): an alternative to all-or-nothing for geographic analysis
  • Exporting a QGIS layout to SVG: uses, limitations, and solutions
  • Associating points with their municipality or zone: simple spatial joins with MMQGIS

Recent comments

  1. Atilio Francois on How to develop an application with pgrouting in Windows (1)25 August 2025

    You're right — since 2019 Geofabrik no longer provides plain `.osm` files, only the compressed `.osm.pbf` format. The tool **osm2pgrouting**…

  2. Simon on How to develop an application with pgrouting in Windows (1)25 August 2025

    The osm downloads don't appear to be available, just osm.pfb And osm2pgrouting on Windows doesn't like pbf "not well formed…

  3. Arno on Portable version of QGis 3.32.021 August 2025

    I just want to thank you. It works.

  4. Atilio Francois on Portable version of QGis 3.32.015 May 2025

    What is the link between the qgis update and the portable version? A portable version cannot be updated; it must…

  5. Hugo on Portable version of QGis 3.32.014 May 2025

    For me, the error message complaining that qgis_app.dll is missing started appearing following the most recent QGIS update.

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