MODIS fire data in GRASS GIS

In this post I show how to import 8-day MODIS satellite images from 2002-2021 in a GRASS GIS temporal database, and how to compute some summary statistics based on these data layers.

Upload raster labels to a point layer attribute table

Introducing the v.what.rast.label addon. An little utility to sample the raster values and labels at point locations defined by a vector point layer. Values and labels are written to the attribute table of the point layer.

Latest GRASS GIS addons now also available for Windows

For Window users, several new GRASS GIS addons that were published recently did not show up in the list of available addons when running the g.extension function. But as a great start of the new year, this has now been fixed.

Storing styles and metadata in a GeoPackage

There are many reasons to like the GeoPackage. One is that it makes it so easy to share your data, including symbology and other layer properties in one database file. And what makes this even better is that you can also store QGIS projects directly inside GeoPackage files. This gets you a totally self-contained GeoPackage that you can easily share

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.

Compute the area per category

A short note about different ways in GRASS GIS to create a raster layer with as values the surface area of the categories in another raster layer.

Distance between features

Calculating the distance between features (points, polygons, lines) is a common GIS task. In this tutorial I will calculate the nearest sighting of mountain lions to Minnesota in GRASS GIS

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. There are various ways to access this data, including the Web Coverage Service (WCS) protocol. This post provides an example of how to use the OWSLib pacakge to access soil grid layers for your area of interest.

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


There are several ways you can publish or share your maps, created in QGIS, online. One very easy way is to use the Gisquick publishing platform. It basically requires two steps only; create a QGIS project, and upload it