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

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

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

4. 1-D Timelines (temporal data) computer memory Index Video, audio List
Text
Powerpoint slides

5. Text
What’s wrong with this picture?

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

7. 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

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

9. Zooming: Lifelines
Plaisant, “Lifelines”
Mahesh, Jon

10. O+D: SeeSoft
Eick, “SeeSoft”
Jeevak, Alex

11. Music Animation Machine
Good during serial playback, relate audio to visual structure
Visualizing entire compositions: increase information density
See patterns of phrases, instruments, etc.

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

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

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