International audienceVisualization has shown its ability to produce powerful tools for analyzing, understanding, and communicating data and making it accessible for several different tasks and purposes. Impact of visualization to everyday work and personal lives is demonstrated by many successes stories---such as the increasing prevalence of Tableau, the interactive visualizations produced by the New York Times, or toolkits like VTK/Paraview to name just a few. A large community of casual and professional users are increasingly consuming and producing both interactive and static visualizations.While interactive visualizations move from research into practice at an increasing rate, it still remains an important challenge to find appropriate...