1 D cs 5984 Information Visualization Chris North

1 -D cs 5984: Information Visualization Chris North

Quiz • List 4 methods for visualizing multi-D functions? • • hierarchical axes Slicing Radial Nested frames

Information Types • • Multi-dimensional: databases, … 1 D: timelines, … 2 D: maps, … 3 D: volumes, … Hierarchies/Trees: directories, … Networks/Graphs: web, … Document collections: digital libraries, …

1 -D • • Timelines (temporal data) computer memory Index Video, audio List Text Powerpoint slides

Text What’s wrong with this picture? •

Keyhole Problem • No context • Lost, disoriented • • Where am I? Where can I go? Where do I want to go? How do I get there?

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, error rates, retention, satisfaction Insight

Navigation Strategies • Detail Only • Zooming • Overview+Detail • Focus+Context (Distortion, fisheye)

Zooming: Lifelines • Plaisant, “Lifelines” • Mahesh, Jon

O+D: See. Soft • Eick, “See. Soft” • Jeevak, Alex

Music Animation Machine http: //www. well. com/user/smalin/mam. html • Good during serial playback, relate audio to visual structure • Visualizing entire compositions: increase information density • See patterns of phrases, instruments, etc.

Assignment • Thurs: 1 -D • Mackinlay, “Perspective Wall” » ahmed, ganesh • Hibino, “MMVIS” » atul, dananjan

Next Week • Tues: Empirical Evaluation • Robertson, “Data Mountain” » Quoc, reenal • Thurs: Visualization Development • Bederson, “Jazz” » Jun, Rohit

Project • Updated proposal today • Literature review: Sept 27 • Get started on the project now!