This well-balanced collection is focused on the visual presentation of complex data. Areas of visualization covered • Medical visualization • Flow visualization • Multi-variate visualization and rendering • GPU techniques • Graph visualization • Text and document visualization • Interaction design and time-series visualization EUROVIS 2007, the 9th Eurographics/IEEE VGTC Symposium on Visualization took place in Norrköping, Sweden, May 23–25, 2007. The conference was co-sponsored by IEEE-CS Visualization and Graphics Technical Committee and the EUROGRAPHICS Association.