I am a scientist, open source GIS advocate, and author. This blog was born in 2010 as a place to record my thoughts and experiences in using open source GIS.

My background is in computer science with a specialization in geographic information science and I am currently working with the Center for Mobility Systems at the Austrian Institute of Technology in Vienna. I’m teaching QGIS classes at UNIGIS Salzburg and serve on the QGIS project steering committee. From 2015 to 2017, I served as member of the OSGeo board of directors.

I’ve published several books about QGIS, including “Learning QGIS” (currently 3rd edition), “QGIS Map Design”, and “QGIS 2 Cookbook”. Furthermore, I develop tools such as Time Manager and pgRoutingLayer plugin for QGIS.

You can follow me on Twitter @underdarkGIS.

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The contents of this blog, unless stated otherwise, is licensed under a Creative Commons Attribution-ShareAlike 3.0 license.


The information in this blog is provided as is with no warranties. This blog solely represent my personal opinion and not the opinions or strategies of my employer.

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