ISR News Story
TreeViz (ISR IP)
ISR intellectual property available to license
Each file appears as a rectangle whose size is proportional to the file size, enabling users to spot large files at any level in the hierarchy. TreeViz™ uses color to show file type, e.g. text, picture, application, etc. By pointing and clicking a rectangle, TreeViz™ users can access detailed information about nodes such as filename, path, creation date, etc.
Other options include sound, which offers an additional dimension of data revelation. Users can hear the directories and files as they are displayed or hear patterns by dragging the mouse. Various scaling factors, nesting offsets, depth controls, shape adjustments, shading, and size controls complete the list of TreeViz™ features.
The original concept for TreeViz™ was developed by Ben Shneiderman, Professor of Computer Science, in response to the common problem of a filled hard disk. Since the hard disk in the Human-Computer Interaction Laboratory was shared by 14 users, it was difficult to determine how and where space was used. Finding large files that could be deleted, or even determining which users consumed the largest shares of disk space, were difficult tasks. Finding an effective visualization strategy took only a few months; but producing a working piece of software took over a year. Brian Johnson implemented the algorithms and refined the presentation strategies while preserving rapid performance even with 5,000 node hierarchies.
For more information
ISR-IP-Shneiderman ISR-IP-TreeViz ISR-IP-HCIL ISR-IP-software ISR-IP-datamining
June 15, 2007