Cours : QGIS Advanced Tutorials

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QGIS Advanced Tutorials

Hans van der Kwast

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Introduction

Here are 12 advanced tutorials for hydrological applications with QGIS.
It is recommended to do fist the course GIS for Hydrological Applications.

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Course information

12 Livres,

2 Dossiers,

14 Zones texte et média,

8 Fichiers,

1 URL.
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1. Visualise Flow Direction with Arrows

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2. Create a Hypsometric Curve

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3. Calculate time of concentration of a river (Kirpich equation)

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4. Create a longitudinal river profile

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5. Calculate the Topographic Wetness Index from a DTM

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6. Delineate multiple subcatchments

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7. Create a Stage Volume Curve

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8. Burn stream network into DEM

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9. Stream and Catchment Delineation using GRASS tools

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10. Automate Stream & Catchment Delineation using the Graphical Modeller

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11. Zonal Statistics and Area Computation

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- Tutorial Zonal Statistics and Area Computations Livre
- Data Tutorial Zonal Statistics and Area Computation URL
- Zonal statistics and Raster layer zonal statistics
  
  Raster layer unique values report and Zonal histogram
  
  Univariate statistics with GRASS tools in QGIS
12. Stream and Catchment Delineation using PCRaster in QGIS

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- Tutorial Stream and Catchment Delineation using PCRaster in QGIS Livre
Tailor made trainings and advice
Non disponible

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Install QGIS and trouble shooting

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- Install QGIS
  
  QGIS has many different versions and the updates go fast.
  
  In this course we use QGIS 3.22 LTR. LTR means Long Term Release, which means that it is stable and bugs are fixed over a longer time than other versions. There are newer versions, which are great to test new features. However, these versions also might have new bugs and are therefore not recommended for operational use or courses.
  
  There are two ways to install QGIS:
  
  Standalone installer. This is the easiest way, but requires a good internet connection, because you need to download 1GB.
  
  OSGeo4W installer. With this installer, you'll install only what we need, so it needs to download less MBs. However, there are more steps to follow.
  
  Standalone installer
  Watch this video to learn how to use the Standalone installer.
  
  OSGeo4W installer
  
  Watch this video how to download and install QGIS 3.22 LTR and the packages needed for this course. The steps are described below the video.
  
  1. Go with a web browser to http://www.qgis.org
  
  2. Click the Download Now button
  
  3. Choose the OSGeo4W Network Installer
  
  4. Run the installer
  
  5. Choose Advanced Install and click Next
  
  6. In the next screen keep the default settings for Root Directory etc. Click Next.
  
  7. In the next screen keep the default settings for Local Package Directory etc. Click Next.
  
  8. In the next screen keep the default to select Direct Connection. Click Next.
  
  9. In the next screen keep the default settings for Available Download Sites. Click Next.
  
  10. In the screen for Select Packages, first expand the Desktop section by clicking on the + sign
  
  11. Click on the arrows button on the row with qgis-ltr so it shows 3.22.x... (in the video you see that you can also install the newest version, that's not needed for this course!)
  
  12. Click on the arrows button on the row with grass so it shows 7.8.7...
  
  13. Click on the arrows button on the row with SAGA so it shows 7.8.2...
  
  14. Type grass in the search field at the top
  
  15. Expand Libs by clicking on the + sign
  
  16. Click on the arrows button on the row with qgis-ltr-grass-plugin so it shows 3.22.x...
  
  17. Type pcraster in the search field at the top
  
  18. Expand Libs by clicking on the + sign
  
  19. Click on the arrows button on the row with pcraster so it shows 4.3.3...
  
  20. Click Next
  
  21. Keep the settings for the dependencies and click Next
  
  22. After installing click Finish.
  
  23. Start QGIS Desktop 3.22 from the Windows Start Menu.
  
  More help with PCRaster installation
  PCRaster Tools plugin documentation.
  
  Overview of the QGIS Desktop interface
  This video gives you a tour around the QGIS Desktop Graphical User Interface:
- Trouble shooting
  
  Check this playlist for trouble shooting challenges with QGIS: