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Author: Atilio Francois

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Displaying marine charts with S57 QGis

The sources of information for the coastal regions are not limited to classical terrestrial sources. The marine charts can provide information very helpful and they allow creating rich and impactful documents. The most adapted sources to…

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ArcGis Model Builder: FOR and WHILE iterators

In the previous article ( ArcGIS Model Builder: expand a model to a set of input data ) we have addressed the most common iterators used with Model Builder. These iterators make it possible to apply…

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1-n joins in QGis: virtual layers

One of the most common techniques in GIS in order to treat non-spatial data is that of the join. We use a geographical layer having geometries, as support for another layer having no location data. To…

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QGis 2.14 and Grass 7: how to do it?

Since QGis version 2.14, whichever the Installation chosen, it has become impossible to use Grass 7 from the window of treatments. An error message such as, or similar to the following appears at when trying to…

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How to create Tanaka’s illuminated contours with QGis

The Tanaka’s contours are a method of displaying terrain developed by Professor Tanaka Kitiro in 1950. Tanaka called his technique the “Relief Contours Method”. However, it is usually called the “Illuminated Contour Method” or the “Tanaka…

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Model Builder: how to convert a batch model to an interactive model

The principle of Model Builder is to create geoprocessing tools, which are by definition “batch” tools. This means that there is no   interaction between the user and the processing, once launched. You define the input…

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Recent articles

  • Crossing spatial selection and graphic analysis in QGIS with Data Plotly
  • Visualize your GIS data in QGIS with the Data Plotly plugin
  • Heatmaps and hotspot maps in QGIS
  • Easily add base maps to QGIS: three practical methods compared
  • QGIS: A New “SQL Query” Option in the Layer Context Menu

Recent comments

  1. 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…

  2. 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.

  3. Atilio Francois on Portable version of QGis 3.32.07 May 2025

    Hello The problem with the portable version is that it's very dependent on the particular configuration of the machine. The…

  4. NotFred on Portable version of QGis 3.32.07 May 2025

    I have never had QGIS installed in my machine (it's a brand new laptop) and I get the same error,…

  5. Atilio Francois on Portable version of QGis 3.32.028 April 2025

    The file is present in the download ...\QGIS 3.32.0\QGIS 3.32.0\apps\qgis\bin The error message probably comes from a previous installation of…

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