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Tutorials & user notes

I have been writing various tutorials and user notes over the years. Some were published as blog posts, others as online tutorials. On this page, you’ll find links to the latter. Most are practical / hands-on examples of (spatial) data handling and analysis that can be done in GRASS GIS and related software tools such as R, QGIS, Python and SQLite. You can filter the tutorials by subject, or you can use the search function. I hope these are of use to you.

Boxplots based on raster data in GRASS GIS
Different methods in GRASS GIS to compute the area of the categories. tags: raster, surface area, category layer

MODIS fire data in GRASS GIS
Small walk-true of how to import MODIS satellite images from 2002-2021 in a GRASS GIS temporal database, and how to compute some summary statistics based on these data…

Playing with animal tracking data in QGIS
Visualize the movements of cattle in the Logone Floodplain in Cameroon. tags: Temporal Controller, QGIS, time series

Density distribution map of white-tailed deer
A habitat suitability map for the white-tailed deer using multicriteria analysis in GRASS GIS. tags: spatial disagregation, species distribution

Compute the area per category with GRASS GIS
Different methods in GRASS GIS to compute the area of the categories. tags: raster, surface area, category layer

From suitability to suitable regions
Using the r.suitability.regions add-on to identify suitable regions based on a suitability map and user-defined minimum area size. tags: GRASS GIS, multicriteria analysis

Distance between features
Calculating the distance between piont and polygon features in GRASS GIS. tags: sighting, puma, GBIF

Legacy GIS tutorials and notes
Tutorials and user notes on the use of open source tools for (spatial) data handling and analysis. tags: R, GRASS GIS, QGIS, SQLite.

Import GBIF data in QGIS
This tutorial shows how to download GBIF occurrence data of species in QGIS and the GBIF Occurrences plugin. tags: data import, species distribution

Import GBIF data in R
This tutorial shows how to download GBIF occurrence data of species in R and visualize in grass gis. tags: data import, species distribution

Access soilgrid data using the WCS protocol
This tutorial shows how to use the Python OWSLib package to access soilgrid.org data via the Web Coverage Service (WCS) protocol. tags: GRASS GIS, WCS, open data

Tree species diversity distribution
How to use the r.series.diversity addon for GRASS GIS to generate maps of the tree species diversity across the contiguous USA. tags: GRASS GIS, biodiversity…

Adding functions to the QGIS toolbox
Writing a script for the processing toolbox in QGIS. tags: automate tasks, graphical modeller, scripting.

Import NASA DEM in GRASS GIS
Downloading and importing the NASA DEM in GRASS GIS with the r.in.nasadem addon. tags: data import, SRTM, DEM

Creating a map using tmap
Use tmap to add an inset map to a map, making sure it aligns well with the legend. Tags: tmap, R, cartography

Spatial interpolation in GRASS GIS
Introduction to spatial interpolation in GRASS GIS tags: data import, spatial analysis

Import and explore reconstructed MODIS LST data
Importing and exploring monthly MODIS LST data in GRASS GIS. tags: temporal database, time series

Mapping the number of mammal species based on IUCN redlist range maps
Creating a map in GRASS GIS with species numbers based on the IUCN redlist range maps. tags: GRASS GIS, nature conservation, IUCN
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