cs5984: Information Visualization Chris North 1-D cs5984: Information Visualization Chris North

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

Information Types Multi-dimensional: databases,… 1D: timelines,… 2D: maps,… 3D: 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: SeeSoft Eick, “SeeSoft” 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” Hibino, “MMVIS” ahmed, ganesh Hibino, “MMVIS” atul, dananjan

Next Week Tues: Empirical Evaluation Thurs: Visualization Development 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!