Tech Report HCIL-2002-08

Golub, E., Shneiderman, B. (May 2002)
Dynamic Query Visualizations on World Wide Web Clients: A DHTML Approach for Maps and Scattergrams
To appear International Journal of Web Engineering and Technology 1, 1 (2003).
HCIL-2002-08, CS-TR-4367, UMIACS-TR-2002-47, ISR-TR-2005-28

Dynamic queries are gaining popularity as a method for interactive information visualization. Many implementations have been made on personal computers, and there is increasing interest in web-based designs. While Java and Flash strategies have been developed, we believe that a Dynamic HTML implementation could help promote more widespread use. We implemented double-box range sliders with choropleth maps and scattergrams, which are two popular visualizations, using HTML layers and tables. This paper describes our methods for slider control, visual presentation, and displaying/updating results for these visualizations. Visual design issues innovations and performance enhancements were necessary to create viable designs.