Treemap
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Project description
Treemap is a space-constrained visualization of hierarchical structures. It is very effective in showing attributes of leaf nodes using size and color coding. Treemap enables users to compare nodes and sub-trees even at varying depth in the tree, and help them spot patterns and exceptions.Treemap was first designed by Ben Shneiderman during the 1990s. For more information, read the historical summary of treemaps, their growing set of applications, and the many other implementations. Treemaps are a continuing topic of research and application at the HCIL.
News and Events
Treemap 4.1.1 (February 17, 2004) is now available. See below for download information.See the online documentation and history of changes
On May 31, 2001, the Treemap Implementations and Applications workshop was held in conjunction with the HCIL 18th Annual Symposium and Open House.
Participants
Catherine Plaisant
Ben Shneiderman
Gouthami Chintalapani, Graduate Student (Systems Engineering)
Aleks Aris, Graduate Student (Computer Science)
with the participation of Ben Bederson, Jean Daniel Fekete and Susan Grodsky.Also, over the years, many other students have participated in some way or another in the development of various HCIL Treemap versions: Brian Johnson, the original implementer, but also David Turo, Ketan Babaria, Steve Betten, Jim Blowitski, Raghuveera Chalasani, Evren Sirin, Fusun Yaman, Marko Teittinen, Toshiyuki Asahi, Ani Jain, Niem Dang, Nilani Aluthgedara (if we forgot your name... let me know)
Software/Download/Licensing
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For commercial use (e.g. internal use in a company or institution, inclusion in a product offered for sale):
Treemap is available for licensing. Please contact the University of Maryland Office of Technology Commercialization.
For NON commercial use ONLY (e.g. academic use, evaluation by a single individual in a company or institution for a month):
Download Treemap 4.1
(Requires Java 1.4)
This is a fully functional version of Treemap, and you can read in the online documentation how to create your own data files.
You can also try the applet version
(also requires Java 1.4 plugin) (Having problems with the applet?).
Comments, questions to plaisant@cs.umd.edu (BUT REMEMBER THAT THIS A VERY OLD HCIL PROJECT i.e. we are very happy that it still runs - as of June 2014, but do not have the resources to update the code).
Recent Sponsors
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We would like to thank ChevronTexaco, Microsoft and the Hive Group for their support of the later work on Treemap4
Publications and reports
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For a paper on the Treemap algorithms:
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Bederson, B.B., Shneiderman, B., and Wattenberg, M.
Ordered and Quantum Treemaps: Making Effective Use of 2D Space to Display Hierarchies
ACM Transactions on Graphics (TOG), 21, (4), October 2002, 833-854.
HCIL-2001-18 , CS-TR-4277 , UMIACS-TR-2001-57
The Original PhD Thesis "Treemaps: Visualizing Hierarchical and Categorical Data" by Brian Johnson
HISTORICAL SUMMARY OF TREEMAP research and applicationsat HCIL and elsewhere
(edited by Ben Shneiderman and Catherine Plaisant)
For papers about some of our applications:
- Society of Petroleum Engineers conference, 2003
Project Management Institute Conference, July 2004
Treemaps to Visualize Gene Ontologies: an early exploration and a later 2004 paper
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For a list of the MANY HCIL PAPERS written about Treemaps: run a search on TREEMAP in the HCIL technical reports database.
Most recent, about Flexible hierarchy:
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Int. Conf on InfoVis, London 2004
Related sites
InfoVis2003 Contest (on tree visualization)
HCIL Annual Symposium and Open House
Direct your questions to plaisant@cs.umd.edu (BUT REMEMBER THAT THIS A VERY OLD HCIL PROJECT i.e. we do not have the resources to update the code of the original treemap application)
©2003, HCIL, University of Maryland
Last updated
August 05, 2003