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Author: Atilio Francois

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Exploratory data analysis for geostatistics: Voronoi diagrams

Following the article   Introduction to exploratory data analysis for geostatistics   we will discuss all the available tools to carry out the exploratory analysis of spatialized data. We have discussed   the histograms ,    the QQ-Plots , and now we will address the Voronoi maps.…

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Exploratory analysis of data for geostatistics: the QQ-plot

Following the article   Introduction to exploratory data analysis for geostatistics   we   will discuss each of the available tools to carry out the exploratory analysis of spatial data. We have already discussed  the histograms , and now we will address the QQ-Plots.…

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ArcHydro : 2- Preparing a corrected DTM for hydrology – Part 1

A  Digital Terrain Model is a representation of the elevations of a territory. Each cell (pixel) of this DTM contains a height value. According to the generation means used for the surface and the allocated size…

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Hydrology with a GIS, for the Dummies (that we are): calculation of the flow (4)

In the last three articles, we have discussed an example of application for each of the main methods for calculating the flow of a watershed. Although they are quite self-explanatory, we must go through a little theory…

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Hydrology with a GIS, for the Dummies (that we are): calculation of the flow (3)

In the two previous articles ( Hydrology with a GIS, for Dummies (that we are): calculation of the flow (1)   and   Hydrology with a GIS, for the nulls (that we are): calculation of the flow (2 ) we have approached…

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Hydrology with a GIS, for the dummies (that we are): calculation of the flow (2)

This article is the continuation of the previous article:  Hydrology with a GIS, for dummies (that we are): calculation of the flow (1) Now, we will discuss the result of the application of another flow calculation method.…

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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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