A picture is worth a thousand words, and some say a map is
worth a thousand pictures. So let's see what it would take to bring
some of your own data on a map. You want to visualise web site
visitors, shops and their clients or rather your last bycicle trips
and their statistics?

We'll discuss some of the key free and open source programs to build a
"Geographical Information system", and demonstrate how they can be
used to create nice maps and web applications by combing your own
data with open data (eg openstreetmap) and publicly available
governement services (Belgium/the Netherlands).