Tutorials

Playing with animal tracking data in QGIS

Using the Temporal Controller in QGIS to visualize the movements of cattle in the Logone Floodplain in Cameroon. Based on data from the Movebank, a free, online database of animal tracking data.

Creating a density distribution map of white-tailed deer using GRASS GIS

In this GRASS GIS tutorial we create a habitat suitability map for the white-tailed deer (Odocoileus virginianus). We combine this with deer densities numbers per deer management unit to create a fine-scale deer density distribution map.

Compute the area per category with GRASS GIS

A short note about different methods you can use in GRASS GIS to create a raster layer with as values the area of the categories these cells belong to according to another categorical raster layer.

From suitability to suitable regions

An explanation how you can use the r.suitability.regions add-on to delineate regions with a minimum area size that consist of contiguous raster cells with a suitability score above a certain user-defined threshold.

Distance between features

Calculating the distance between features (points, polygons, lines) is a common GIS task. Here I will use GRASS GIS to calculate the nearest sighting of mountain lions to Minnesota according to the Global Biodiversity Information Facility (GBIF) database.

Legacy GIS tutorials and notes

Tutorials and user notes on the use of open source tools on the old ecodiv site. The objective is to provide some 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 and SQLite

Import and map GBIF data in R

The Global Biodiversity Information Facility ( GBIF) is an international open data infrastructure that allows anyone, anywhere to access data about all types of life on Earth. This tutorial shows how to download, import and visualize GBIF occurrence data in QGIS and (optionally) GRASS GIS.

Import GBIF data in QGIS

The Global Biodiversity Information Facility ( GBIF) is an international open data infrastructure that allows anyone, anywhere to access data about all types of life on Earth. This tutorial shows how to download GBIF occurrence data of Ambrosia psilostachya in QGIS and the GBIF Occurrences plugin.

Access soilgrid data using the WCS protocol

The soil data layers from soilgrid.org provides access to grid layers representing the spatial distribution of soil properties across the globe. This tutorial shows how to use the Python OWSLib package to access the data via the Web Coverage Service (WCS) protocol, the Python rasterio package to inspect and print the data, and GRASS GIS to store the data.

Tree species diversity distribution

A short description how to use the r.series.diversity addon for GRASS GIS to generate maps of the tree species diversity across the contiguous USA, based on tree species distribution data by Wilson et al. 2013