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Information Visualization: Navigation

Information Visualization: Navigation. Chris North cs3724: HCI. Review. Shneiderman’s Info. Vis. mantra? Strategies for Multi-D visualization:. 1-D and 2-D Spaces. 1-D: info has strong 1-D organization text doc, slideshows, video, audio, lists, timelines

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Information Visualization: Navigation

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  1. Information Visualization:Navigation Chris North cs3724: HCI

  2. Review • Shneiderman’s Info. Vis. mantra? • Strategies for Multi-D visualization:

  3. 1-D and 2-D Spaces • 1-D: info has strong 1-D organization • text doc, slideshows, video, audio, lists, timelines • 2-D: info has strong 2-D organization • spreadsheets, graphs, maps, formatted docs, color chooser, images

  4. PowerPoint Slide Sorter • Data Space: 1D array of slides • Visualization: 2D array, nav 1D

  5. Typical Navigation 1D scrollbar 2D scrollbars What’s missing?

  6. Keyhole Problem • Where am I? • Where can I go? • Where do I want to go? • How do I get there? • Lack of context, overview

  7. Text Overviews (MS Word)

  8. Visual Overview • Show me the data! • Map, organization (spatial layout of concepts) • What information is (not) available? • Adds context info, relationships • Enables direct access • Encourages exploration • HCI metrics: • Improves user performance, learning time, satisfaction Insight

  9. Detail Only Overview+Detail Multiple views Zooming Focus+Context Distortion, fisheye Navigation Strategies

  10. Zooming: 1D • Lifelines: http://www.cs.umd.edu/hcil/lifelines/

  11. Zooming large 2D spaces • http://terraserver.homeadvisor.msn.com/image.asp?S=10&T=1&X=2689&Y=20639&Z=17&W=2

  12. Zooming: 2D • KidPad, HiNote, Jazz • http://www.cs.umd.edu/hcil/jazz/ • Semantic zooming: • Don’t just show things at different size • change objects to make sense • E.g. add/remove detail info • Powers of Ten • Controls?

  13. Overview+Detail: 1D • SeeSoft

  14. Overview+Detail: 1D • Home automation: • Timeline for scheduling, set on/off flags • Calendar shows overview of schedule

  15. Overview+Detail: 2D Overview: Detail: • Zoom factor = 5 Square in overview tightly-coupled to scroll bars of detail

  16. Overview+Detail • Multiple views: • overview • detail view • Views are linked: • Selector in overview navigates detail • Navigating detail updates selector in overview

  17. Multiple levels = large scale overview intermediate view • Zoom factor = 125 intermediate view detail view

  18. Multiple Foci Linkit

  19. Focus+Context: 1D • Fisheye Menu:http://www.cs.umd.edu/hcil/fisheyemenu/ • Perspective Wall

  20. Focus+Context: 2D

  21. Comparison • Zooming: • natural • Infinite scalability • Lose overview when zoom in • Overview+Detail: • Good scalability, chaining • Multiple foci • Disconnect between views, back-n-forth • Focus+Context: • Integrated overview with detail, connected • Least scalable • Distortion, overview unstable

  22. Quiz • Spotfire? • TableLens?

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