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Enhancing Information Visualization: Key Strategies for Effective Navigation

This document explores essential strategies for effective information visualization, focusing on both 1-D and 2-D spaces. It delves into techniques such as zooming, overview-detail methods, and focus-context strategies to improve user navigation and data interaction. By addressing common challenges like the Keyhole Problem and the importance of context, it emphasizes metrics for enhancing user performance, learning time, and satisfaction. Through practical examples and tools, it guides designers in creating visualizations that encourage exploration and provide clear data insights.

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Enhancing Information Visualization: Key Strategies for Effective 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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