Interactive Exploration of Geospatial Network Visualization
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This document summarizes research into improving interactive visualization of geospatial network data on multi-touch tabletop displays. An initial prototype had usability issues around selecting individual affiliations clustered together and clarity of connection strengths. A second prototype addressed these by allowing exploded clusters and visualizing connection quality. User studies found participants engaged in social discussion and storytelling using the improved visualization. Future work aims to further enhance dense data selection and evaluate weighted edge representation.
Interactive Exploration of Geospatial Network Visualization
- 1. Interac(ve Explora(on of Geospa(al Network Visualiza(on CHI 2012 Till Nagel, Erik Duval, Andrew Vande Moere
- 3. Tabletop as social space
- 4. “ Studies have shown geographic proximity is important and does posi6vely influence the intensity and frequency of scien6fic collabora6on. J.S. Katz. Geographical Proximity and ScienIfic CollaboraIon. Scientrometrics, Vol. 31, No.1 (1994)
- 5. Prototypes
- 6. Interac(ons on a mul(touch tabletop
- 8. Pan Zoom & Rotate
- 9. Hints for non-‐obvious interac(ons
- 10. Demo at EC-‐TEL 2010
- 11. User study at EC-‐TEL 2010 -‐ FormaIve user study -‐ 12 parIcipants (9m, 3f, 27-‐52 years) -‐ Execute simple tasks -‐ Think-‐out-‐loud -‐ Post-‐test quesIonnaire on saIsfacIon
- 14. Insufficient geographical informa(on Some parIcipants had problems in finding the places menIoned in the tasks. Possible soluIons: -‐ Display more place names on map -‐ Add text field to search for geographical features -‐ Display list of places, and allow selecIon
- 16. Selec(ng an affilia(on When asked to select an affiliaIon, all parIcipants tapped on its marker. However, users had difficul(es selec(ng a single affilia(on from overlapping markers. Possible soluIons: -‐ Change layout algorithm -‐ Keep clusters, and expand them on demand
- 17. Quality of connec(ons unclear
- 18. Quality of connec(ons unclear A visual connecIon is shown between two affiliaIons if they published at least one paper together. There is no indica(on of the amount of co-‐wriTen papers. Possible soluIons: -‐ Show numbers on connecIon -‐ Map number into visual connecIon representaIon
- 19. Top 3 Issues 1. Improve map style 2. Allow single selecIon of mulIple affiliaIons in proximity 3. Visualize quality of connecIons
- 20. Second prototype
- 23. Enabling selec(on of single marker in a cluster
- 24. Exploding Menu
- 26. Demo tudy at Hypertext 2011 User s at Hypertext 2011 -‐ Same setup as at EC-‐TEL 2010 -‐ 9 parIcipants
- 27. Social Interac(ons • StarIng discussions • ExploiIng the visualizaIon for story-‐telling • Engaging other users
- 28. Conclusions
- 29. Lessons learnt • Design process • Map style • Acceptance of mulItouch interacIon • Radial menu for dense geospaIal data
- 30. Future work • Radial menu for dense geospaIal data • Controlled user study on weighted edges
- 31. Thank you! Ques(ons? Till Nagel, Interac(on Design Lab nagel@-‐potsdam.de – twiTer: @(llnm