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Treemap 3.0 (ISR IP)

ISR intellectual property available to license

Ben Shneiderman, Ketan Barbaria, Steven Betten, James Biowitski, Catherine Plaisant, Raghuveer Chalasani

Treemaps are a space-filling visualization for hierarchical structures that are extremely effective in showing attributes of leaf nodes by size and color coding. Treemaps enable users to compare sizes of nodes and of sub-trees and are especially strong in spotting unusual patterns.

The Treemap visualization technique, developed by Ben Shneiderman at HCIL, University of Maryland, College Park, presents a novel method to respond to visualizing hierarchical information. The Treemap visualization method maps hierarchical information to a rectangular 2-D display in a space-filling manner so that 100 percent of the display space is utilized. In this method nodes, whose attributes are of more importance, are given more display area. Users have the choice to define the leaf node attribute that determines space allocation. Treemaps coupled with dynamic query provides users' with powerful tool to query a large data set or to find patterns. Dynamic query in Treemap is implemented using sliders. It applies the principles of direct manipulation to:

- Database searching

- Visual representation of the query's components

- Visual representation of results

- Rapid, incremental and reversible control of query

- Selection by pointing, not typing

- Immediate and continuous feedback.

The University of Maryland is proud to offer its Java version of Treemaps, better known as Treemaps 3.0. This version supports slice-and-dice and squarified layouts with a simplified input format to enable easier loading of user data. Treemap website

For more information
If you would like to license this intellectual property, have questions, would like to contact the inventors, or need more information, contact ISR External Relations Director Jeff Coriale at or 301.405.6604.

Find more ISR IP
You can go to our main IP search page to search by research category or faculty name. Or view the entire list of available IP on our complete IP listing page.

ISR-IP-Shneiderman ISR-IP-HCIL ISR-IP-software ISR-IP-databases ISR-IP-datamining

Related Articles:
HCE: Hierarchical Clustering Explorer (ISR IP)
Treemap 4.0 (ISR IP)
Treemap 2000 (ISR IP)
GRIDL: Graphical Interface for Digital Libraries (ISR IP)
Excentric Labeling: Dynamic Neighborhood Labeling (ISR IP)
LifeLines for Visualizing History Records (ISR IP)
QUIS™: Questionnaire for User Interaction Satisfaction™ 7.0 (ISR IP)
TreeViz (ISR IP)
QUIS: Questionnaire for User Interaction Satisfaction (ISR IP)
Indexing RDF and Temporal RDF Databases (ISR IP)

June 19, 2007

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For more information, contact ISR External Relations Director
Jeff Coriale at or 301.405.6604.

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