Marc Smith's work at
Microsoft Research
applies treemaps in the Netscan project, http://netscan.research.microsoft.com
to data mine and visualize Usenet, one of the largest collections of social
cyberspaces. Their initial goal is to provide an overview of the range of
variation in Usenet and to highlight indicators and frequencies of different
types of groups. Marc Smith and Andrew Fiore presented their work "Visualization
components for persistent conversations" at ACM SIG CHI 2001. Microsoft Research makes .NET
treemap components available.
Christophe Bouthier, a graduate student in
Nancy, France
,
maintains a free Java library at http://treemap.sourceforge.net/.
The Hive Group (www.hivegroup.com), San
Mateo, CA, develops and licenses Honeycomb, a
treemapping software suite suitable for large-scale enterprise deployments. Honeycomb
automates the development, deployment and management of treemaps including the
definition and maintenance of users, roles, and security. The Hive Group's customers
include Intel, Sun Microsystems, Merck, and The US Marine Corps.
The Marine Corps Equipment Readiness Information Tool (MERIT) is used
daily by 3000 people to manage logistics for material readiness. It
has received numerous awards and commendations.
See descriptions and news
releases.
The story was written up in Government Computer News, see: "Marine Corps logistics
systems are better on MERIT".
Another Hivegroup licensee,
Matrikon, has built treemaps into their process control tools, and
reports on it in Finding a
Needle in the Haystack- An Innovative Means of Visualizing Control
Performance Problems. A second paper has further examples and
explanations: A Picture Worth a Thousand
Control Loops. More recently (2014): another example of use for Plantwide Performance Assessment
The HiveGroup software was also used in a
controlled
experimental evaluation by Joe Goldberg of Oracle (proc. HFES 2005)
. He compared
treemaps to tabular data for 8 tasks and found that treemaps were
significantly faster for all tasks. His conclusion is that: "These
results suggest that treemaps should be included as a standard
graphical component in enterprise-level data analysis and monitoring
applications."
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The Smithsonian Institution developed a treemap exhibit during summer 2001, History Wired, with help from Smartmoney�s
Martin Wattenberg. The 450 items are clustered into groups such as home,
clothing, business, computers,... and linked to attributes such as politics,
medicine, and science. Users can click to get more details, search by
attributes or filter by time period. This novel web site invites users to
record their level of interest for items, which grow in size as they get higher
scores.
Lucernex, is promoting "Visualization software for program
management" with its first success story in real estate development
project management: http://www.lucernex.com/Walkthrough/programmap.htm.
For Java programmers, a tool called JavaTreeProfiler http://jcoverage.sourceforge.net/
shows execution time profiles in a zoomable treemap with area for each method
and color coding for the method types.
Panopticon (www.panopticon.com),
Stockholm, Sweden
, sells treemap software and offers toolkits for Java and .Net developers. The company
offers its Panopticon EX product as well as its Java and .NET SDKs on a free trial basis. See here
The German Research Center for Artificial Intelligence uses treemaps in a
decision support system, based on the Analytical Hierarchy Process, called Maut
Machine. Their demo and research paper are available at http://www2.dfki.de:8080/mautmachine/html/index.html.
IBM Research developed a treemap version for network management, described
in March/April 2003 issue of IEEE Computer Graphics & Applications
"Treemaps for Workload Visualization".
Patrick McConnell of Duke University Medical Center has
applied treemaps for showing gene expression results from hierarchical
clustering. His paper, �Applications
of Tree-Maps to hierarchical biological data,� appears in the journal Bioinformatics.
And the software is available for TreeMapClusterView.
In October 2003, a major supplier of optimization and
visualization components, ILOG , began offering a
free test version of a major visualization tool kit called Discovery. This toolkit
includes treemaps, and allows users to show any hierarchy, such as a
directory of 50000 files, colored according to their file type.
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An
innovative application by Marcos Weskamp in April 2004, was to take the
Google News output and show it with a newsmap. Color codes the type of
news story (sports,
business, national, etc.) and size indicates how many news stories there are
on this topic.The newsmap provoked a lively discussion
at Slashdot
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In 2003, Solvern Innovation
licensed Treemap 4 from the
UniversityofMaryland
and in 2004
is offering its own product called “Snowflake” based on Treemap.
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Stefan
Hundhammer used the cushion treemap strategy to build KDirStat, a graphical disk
usage utility, available (August 2003) at http://kdirstat.sourceforge.net/kdirstat.html
A
group at Lulea University of Technology in
Sweden
developed a 3D treemap for
file browsing that shows depth in tree as the height of steps (http://www.sm.luth.se/csee/csn/visualization/filesysvis.php)
Their
study with 20 participants showed benefits for the 3D layout for the task
that asked to locate the deepest directory:
Bladh,
T., Carr, D., Scholl, J. Extending
tree-maps to three dimensions: a comparative study, Proceedings of the 6th Asia-Pacific Conference on Computer-Human
Interaction (APCHI 2004), M. Masoodian, S. Jones, and B. Rogers, editors.
Rotorua, New Zealand
, June 29-July 2,
2004.
Jean-Daniel
Fekete used his InfoVis
Toolkit to generate several treemaps of the results of the April 2004
French elections in high resolution. http://www.lri.fr/~fekete/elections2004
LabEscape's Tree Map 2.0
is sold to the financial community as a way to『explore data in new ways... discover
impressive insights... make better decisions.』One novel feature is to include stock price
graph in the rectangle for each stock.
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ProClarity Performance Map is also based on Treemaps. See
article in
intelligence enterprise.
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Voronoi Treemaps:
To display software metrics Michael Balzer
developed this variation of the Treemap algorithm which uses arbitrary polygons instead of
rectangles. The layouts are computed by the iterative relaxation of Voronoi tessellations.
See the SoftVis 05 paper.
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More Treemap PAPERS
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Thomas Baudel, Browsing through an information visualization design space Proc. ACM CHI 2004
Conference on Human Factors in Computing Systems 2004 v.2, p.765-766.
Bjorn Engdahl, Malin Koksal, and Gary Marsden, Using treemaps to visualize threaded
discussion forums on PDAs, Proc.ACM CHI 2005 Conference on Human Factors in Computing
Systems 2005 v.2, p.1355-1358.
Lance Good, Ashok C. Popat, William C. Janssen, and Eric Bier A fluid treemap
interface for personal digital libraries, JCDL'05: Proc. 5th ACM/IEEE-CS Joint
Conference on Digital Libraries 2005, p.408.
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.
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Circular treemaps make for a
visually attractive layout and possibly useful idea because nesting is nicely visible, but
the wasted space undermines its efficacy, as the author, Kai Wetzel, points out. Still this
could be engaging and entertaining for many applications.
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.
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Treemaps were used innovatively by Carl Tashian for the June 19's entry of his blog that shows
strip treemaps where photo size is based on ratings of the photos. I think his appealing
examples are done by hand, but they might inspire some programmed solutions.
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.
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Internet tagging site del.icio.us shows a treemap of the top web
sites.
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.
.
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Ben Shneiderman writes about treemaps in a Business Integrated Networks article.
Discovering Business Intelligence Using Treemap
Visualizations
Published: April 11, 2006
B-EYE-Network - Boulder,CO,USA
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Geoff Gaudrealt created a treemap version that ensures horizontal aspect ratios to help ensure that
labels fit easily for his Slashdot news aggregator, called
RoomforMilk.
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Treemaps in your evening TV show? On March 27 2006, on the hit FOX-TV program about counterterrorism
"24", the character Chloe was looking through a bad guy's hard drive and used a treemap
visualization of his files. Only a few seconds...
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.
.
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In April 2007 the NY Times had a story about travel deals
and the article mentioned and gave a good description about
pointmaven.com using treemaps to show their search results.
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.
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This paper from Lu and
Fogarty proposes Cascaded Treemap to improve visibility. The mild 3-D effect is attractive and seems
helpful.
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.
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Macrofocus now has a Treemap product
(seen 11/2006)
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.
.
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The New York Times (February 25, 2007) used a treemap to show the health of the car, van, SUV, and truck market. The
treemap showed 3 US and 14 international firms, two vehicle types, volume of sales (size), and
change in sales (color).
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.
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Treemap "a resounding success" at BNSF Railway Company with CORR-Maps (with CORR an acronym meaning
Condition of the Railroad). See Paper (Nov. 2007)
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.
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WinDirStat is a disk usage statistics viewer and cleanup tool
for Microsoft Windows (A SourceForge project)
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.
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Tasos Sidiropoulos and Krzysztof Onak demonstrate 2 methods for creating treemaps with provable
theoretical guarantees.
See paper. (added 06/2008)
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.
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A thoughtful analysis of good and bad features in commercial treemap tools from the Smart Data
Collective
in this blog entry
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.
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New
York Times article about a year of heavy losses in the Financial industry, using a treemap
as illustration.
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.
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MagnaView also offers treemap and related displays. See the
Gallery
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.
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Renaud Blanch proposed
Zoomable treemaps (ZTMs) to navigate the hierarchy with a multi-scale technique.
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.
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Shan Carter (NY Times) creates
dynamic treemap of the progress of the financial trauma for big banks. It was innovative in
using animated transitions yet preserved order as sizes changed. Then Carter did a lucid
presentation of the Obama budget proposal.
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.
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Amanda Cox (NY Times) shows the
Consumer Price Index in the NY Times with a circular Voronoi treemap.
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.
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Wikipedia has a fine article on
treemapping, and a review of Treemapping software.
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.
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Google Chart Tools
gets a treemap and Google Docs now has a
treemap tool built in (added in 2013).
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.
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Macrofocus GmbH now also provides a much enhanced Treemap
implementation (added in 2013).
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.
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The University of Washington's Institute for
Health Metrics and Evaluation has developed a revealing visualization tool, GBD Compare, based on the
Global Burden of Disease . GBD Compare makes good use of treemaps to enable users to explore causes
of death and their impact worldwide. Their
video shows off some of the powerful features on their large database (added in 2013).
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Texas Tribune uses
treemaps to
explain campaign ads
and offers an explanatory video
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. .
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The exhibit Every
AlgoRiThm Has ART in it of the Treemap Art
Project is displayed at the National Academy of Sciences, October 16, 2014 - April 10, 2015,
in Washington, DC. It includes a 20-page catalog. A third set of the 12
prints from the Treemap Art Project were accepted for the collections of the Museum of Modern Art
(New York).
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.
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The Hive Group (the 1st company to focus on enterprise treemaps for
operational use) announces merger with Visual Action (January 2015).
Visual Action releases new version of Flaremap
for Big Data applications (July 2015).
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FinViz puts up a nicely designed treemap for the Standard and
Poor 500 stocks
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Treemaps have moved from a novel idea to widespread acceptance, which now means
inclusion in Microsoft Excel 2016 (see
Blog entry and Excel
manual.
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SAS now offers treemaps as part of JMP. See
SAS Blog 1 and SAS
blog 2
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