1. Multiple View Strategies cs5984: Information Visualization Chris North

2. Quiz 2 strategies for making overviews: hammer: visually compress Chainsaw: cut »Aggregate items or attrs »Eliminate items or attrs

3. Problem Can’t display everything in one view Scale: Many attributes Many items Complex data Multiple data tables (Relational databases) Multiple data types (e.g. tables, images) Need different visualizations for different parts of data

4. Solution Multiple Views Linked a.k.a. Tightly coupled, Coordinated views User interaction in one view affects other view(s) Ties parts together Separates data into parts

5. Strategies for Linking A Rough Taxonomy: Link = link between actions in two views 3 possible combinations: select  select:Brushing and Linking select  navigate: Overview and Detail navigate  navigate: Synchronized Navigation select, navigate select, navigate link

6. Brushing and Linking select  select Many attributes

7. Brushing and Linking Multiple perspectives

8. Brushing and Linking Multiple data types Mutually exclusive structures

9. Overview and Detail select  navigate Word Web frames

10. Overview and Detail Many items, few attributesto Few items, many attributes (something about everything) (everything about something)

11. Overview and Detail Drill down 1:M 3 levels: folders files file

12. Synchronized Navigation navigate  navigate E.g. synchronized scrolling

13. Synchronized Navigation Isnt it nice? Dreamweaver macromedia

14. Quiz Dynamic Queries?

15. Quiz Transitivity

16. Visualization SpreadSheet Chi, “Visualization Spreadsheet” Mudita, Abhi

17. Snap North, “Snap-Together Visualization” Varun, Kumar

18. Web Logs

19. Census Data

20. Photo Library

21. Mailing List

22. Visage Roth et al, CMU Data-centric Drag-and-drop data Brushing Sage: view construction http://www-2.cs.cmu.edu/~sage/visage.html

23. Next Week Book chapter 8 Tues: Trees Rao, “Hyperbolic Trees” » david, harsha Robertson, “Cone Trees” » anuj, atul Thurs: Trees Johnson, “Treemaps” » vishal, jeevak Beaudoin, “Cheops” » jon, mudita

24. Homework #3 Due Thurs Nov 1 See website for important details Zoomable visualization design Use Jazz HiNote to create an information space Topic ideas: hobby, life story, event, academic field Goal: help someone learn about topic 1 page report: analysis of zooming concept, your design Be creative, have fun! http://infovis.cs.vt.edu/cs5984/homework3/chnorth1.html http://vtopus.cs.vt.edu/~north/infoviz/hinoteapplet.html New!