Prof. Dr. Jürgen Döllner


Tel.: +49-(0)331 5509-3921
Fax: +49-(0)331 5509-172
Room: H-2.22
Email: sebastian.hahn(at)hpi.de

Research Interests

  • Visual Software Analytics
  • Metaphor-based Visualization
  • Layout Stability
  • Evaluation of Visualization Techniques





Evaluation of Sketchiness as a Visual Variable for 2.5D Treemaps

Limberger, Daniel; Fiedler, Carolin; Hahn, Sebastian; Trapp, Matthias; Döllner, Jürgen in Proceedings of the 20th International Conference of Information Visualization (IV'16) 2016 .

Interactive 2.5D treemaps serve as an effective tool for the visualization of attributed hierarchies, enabling exploration of non-spatial, multi-variate, hierarchical data. In this paper the suitability of sketchiness as a visual variable, e.g., for uncertainty, is evaluated. Therefore, a design space for sketchy rendering in 2.5D and integration details for real-time applications are presented. The results of three user studies indicate, that sketchiness is a promising candidate for a visual variable that can be used independently and in addition to others, e.g., color and height. © The Authors 2016. This is the authors' version of the work. It is posted here for your personal use. Not for redistribution. The definitive version will be published in Proceedings of the 20th International Conference on Information Visualization (IV'16).
Further Information
Tags 2.5D_Treemaps Sketchiness Uncertainty Visual_Analytics Visual_Variables cgs


WiSe 2016/17

  • Lecture 3D Computergraphics I (tutor)


  • Seminar Methods and Techniques of Software Visualization (tutor)
  • Lecture 3D Computergraphics II (tutor)


  • Seminar Systems Engineering for Software Analytics (tutor)


  • Seminar Visual Software Analytics (tutor)
  • Lecture Einführung in die Programmiertechnik II (tutor)


  • Seminar Visualization for Interactive Software Analytics (tutor)
  • Bachelor's project Software Analytics and Visualization (co-supervisor)

SoSe 2014

  • Lecture 3D Computergraphics I (tutor)

WiSe 2013/14

  • Seminar Software Analytics (tutor)
  • Seminar Game Programming (tutor)

SoSe 2013

  • Lecture Geovisualization (tutor)
  • Seminar Softwarevisualisierungsverfahren (tutor)

WiSe 2012/13

  • Bachelor's project A Visualization Tool for Software Evolution (co-supervisor)

SoSe 2012

  • Lecture Visualization (tutor)
  • Seminar Softwareanalyseverfahren (tutor)

Master's Theses

  • ThreadCity: Combined Visualization of Structure and Activity of Multi-threaded Software Systems - Nikolai Wuttke (finished

Further Activities

  • Participant of ETH Winter School on Eye Tracking  (January 2016)
  • Teaching-Team Member OpenHPI Course "Automated Visual Software Analytics" (March 2015)
  • SoftVis project in cooperation with the SAP Innovation Center, Potsdam (April 2012 - March 2016)