Observing deforestation with Sentinel-1
While preparing for an upcoming presentation at the annual meeting of the American Geophysical Union (AGU) I came across a topic that I thought might make an interesting blog…
Tag: how-to
Using Sentinel-2 for crop monitoring
Sentinel-2 is the optical satellite of the Copernicus programme. It can be compared to Landsat, although it has a better resolution, of 10 to 20 meters. We’ll be…
Extracting information from Sentinel-1
SAR images can see through clouds and in darkness, and are therefore very useful for operational monitoring of our seas. Detecting ships, icebergs, wind patterns, and oil spills…
What is better: a map or a picture?
I was reading an article entitled “China, the megalopolis of 110 million inhabitants that impresses the world” on a popular online journal (see article) and after a dozen…
Raster Comparison using ArcGIS
In one of the biggest groups of geoscientists in Germany, Austria and Switzerland the question arose how to do a raster comparison in ArcGIS. I’ve already mentioned some…
From CSV To Heatmap With Leaflet
There are so many applications out there but they probably share one thing: export your data as a XXX-delimited table. And it’s also very easy to create a…
How to build your own QGIS plugin
Since I’ve created the QGIS plugin qgis2leaf I was surprised how easy it is to create a plugin for QGIS. In this post I would like to show…
QGIS 2.2 on Ubuntu Trusty Tahr 14.04
QGIS on Ubuntu Trusty Tahr I’ve have started working nearly 100%, outside of work, in Ubuntu. I was running Ubuntu 13.10 so naturally I decided to upgrade to 14.04. My experience…
Install QGIS 2.0 on Ubuntu
Today QGIS 2.0 was officially released and we will come up with several tutorials in the next weeks. First of all: the installation. As we are fans of…
OpenSource QGIS + PostGIS installation: “the Windows way”
A short time ago I’ve posted an article on the installation of QGIS in combination with a PostGIS database in the background. As we all know, Windows is…
OpenSource QGIS + PostGIS installation: “the Ubuntu way”
A lot of you out there are probably working on Windows Systems using ArcGIS and I have to admit that the possibilities with ArcINFO in the background and…
unsupervised classification in QGIS: kmeans or part two
As I have already covered the creation of a layer stack using the merge function from gdal and I’ve found this great “plugin” OrfeoToolBox (OTB) we can now…