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INTRODUCTION TO
VISUALIZATION
Vetria Byrd, PhD
Director of Advanced Visualization
Clemson Computing & Information Technology
June 08, 2015
REU Site: Research Experience for
Undergraduates in Collaborative Data
Visualization Applications
NSF
ACI
REU
REU Site Funded by NSF ACI Grant No. 1359223, Vetria L. Byrd, PI
� Mileage Reimbursements
� VisREU Website
� Research Methods Book
� Surveys
� Feedback
� Stipends
� Printing
� Open the floor to questions and comments. . . .
ADMINISTRIVIA
ABOUT ME
Research Associate
Visual Computing Division
REU Site Coordinator/PINSF AC I Awa rd 1359223
Vetria L. Byrd, PhD
Director, Advanced
Visualization Clemson Computing and Information
Technology
Cyberinfrastructure Technology
Integration
Agent for “InsightInsightInsightInsight”
http://citi.clemson.edu/people/vlbyrd/
Academic PreparationAcademic PreparationAcademic PreparationAcademic Preparation
� University of Alabama At Birmingham, Birmingham, Alabama
� Computer Science� PhD, MS, BS
� Biomedical Engineering� Computer Science
� PhD, MS, BS
� Biomedical Engineering
� MSBME
ABOUT ME – WHAT I HAVE DONE
Professional PreparationProfessional PreparationProfessional PreparationProfessional Preparation
� UAB
� School of Dentistry, Comprehensive Cancer Center, School of Medicine, Dept. of Neurobiology
� Bioinformatics, Bioengineering Summer Internship @ VCU
� IBM T.J. Watson Laboratory, White Plains New York
�Visualization Scientist
�Advanced Visualization Division, Director
�Clemson Computing & Information Technology
� Introduce Visualization to the Clemson Community�Hands on visualization workshops
�Collaboration with Faculty, students and staff
�Contribute visualization expertise for grant proposals
ABOUT ME – WHAT I DO NOW
“Enable researchers to gain keen insight
into their data by equipping them with
tools and resources that will allow for
visualizing the expected, and discovering
the unexpected in their data.”
í ixàÜ|tí ixàÜ|tí ixàÜ|tí ixàÜ|tAgent Agent Agent Agent of “of “of “of “ InsightInsightInsightInsight””””
MISSION STATEMENT
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� Visualization created by Christian Weeks, Data Visualization Intern, Clemson Computing and Information Technology, Clemson University
Funded by NSF Award Number 1247198
Collaboration with the University of Washington
WHAT DOES
VISUALIZATION MEAN?
PRETTY PICTURES
WHEN SHOULD YOU
START THINKING ABOUT
VISUALIZATION?
Where is Where is Where is Where is
Visualization?Visualization?Visualization?Visualization?
WHAT IS THE PURPOSE
OF VISUALIZATION?
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“The purpose of
visualization
is “insight”,
not pictures.”~Ben Shneiderman
nounnounnounnoun
1 . 1 . 1 . 1 . an instance of apprehending the true nature of a thing,
especially through intuit ive understanding.
2 . 2 . 2 . 2 . penetrating mental vision or discernment; faculty of seeing into
inner character or underlying truth.
3 . 3 . 3 . 3 . Psychology .
a . a . a . a . an understanding of relationships that sheds light on or
helps solve a problem.
b . b . b . b . ( in psychotherapy) the recognit ion of sources of emotional
dif f iculty.
c . c . c . c . an understanding of the motivational forces behind one's
actions, thoughts, or behavior; self -knowledge.
IN·SIGHTIN·SIGHTIN·SIGHTIN·SIGHT [ININININ-SAHYT]Dictionary.com
WHY IS “INSIGHT”
IMPORTANT?
DISCOVERY
�Visualizing Patterns Visualizing Patterns Visualizing Patterns Visualizing Patterns
over over over over TimeTimeTimeTime
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“Insight” Leads to . . .
“InsightInsightInsightInsight” Leads
to Discovery
�Spotting Spotting Spotting Spotting
DifferencesDifferencesDifferencesDifferences
DECISION MAKING
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�Allows users to Allows users to Allows users to Allows users to answer answer answer answer questions they questions they questions they questions they didn’t know they didn’t know they didn’t know they didn’t know they hadhadhadhad
“Insight” Leads to . . .
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ANALYSIS OF DATA
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�The Challenger The Challenger The Challenger The Challenger
DisasterDisasterDisasterDisaster
“Insight” Leads to . . .
http://en.wikipedia.org/wiki/33
File: Challenger_explosion.jpg
EXPLANATION
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Source: A Tour through the Visualization ZooA Tour through the Visualization ZooA Tour through the Visualization ZooA Tour through the Visualization Zoo by Heer, Bostock & Ogievetsky (ACM
Queue, 2010)
Normal
Overweight
Obese
� Visualizing Visualizing Visualizing Visualizing
Spatial Spatial Spatial Spatial
RelationshipsRelationshipsRelationshipsRelationships
“Insight” Leads to . . .
CAN ANYONE THINK OF
ANOTHER REASON WHY
“INSIGHT” IS
IMPORTANT?
THE USE OF VISUALIZATION
IN THE ANALYSIS OF
POLLUTION AND AIR FLOWS
IN MANHATTAN, NEW YORK
CITY
“Insight” . . . Tells a Story
NAPOLEON’S INVASION OF RUSSIA IN 1812
BY JACQUE MINARD
Temperature
Army Size:
422,000
Army Size:
10,000
Moscow
Army Size:
100,000
---- 11111111
---- 30303030---- 26262626
---- 21212121
---- 9999
Path of retreat
Best Statistical Graphic, Ever!
Insight
Explanation
Tells a
Story . . .
Importance of InsightImportance of InsightImportance of InsightImportance of Insight
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HOW DO WE GET TO
INSIGHT?
VISUALIZATION PROCESS
Descr ibed by Ben Fr y
Acquire
Parse
Filter
Mine
Represent
Refine
Interact
Visualizing Data: Exploring and Explaining Data with the Processing Environment by Ben Fry, O’Reilly
An iterative process
VISUALIZATION PROCESS
Visualizing Data: Exploring and Explaining Data with the Processing Environment by Ben Fry, O’Reilly (p 15)
An iterative process
obtain the data
provide
structure
remove all but
the data of
interest
apply methods from
statistics or data mining
to discern patterns or
place the data in
mathematical context
choose a basic
visual model,
such as a bar
graph, list or
tree
improve the basic
representation to make it
clearer and more visually
engaging
Add methods for
manipulating the
data or controlling
what features are
visible
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VISUALIZATION
APPLICATIONS
VISUALIZATION
BioVis
InfoVis
GeoVis
Scientific Visualization
DATADATADATADATA
Biological Data
Non-numerical Data
Geospatial Data
Simulated, 3D Data
VISUALIZATION APPLICATIONS
BiovisualizationBiovisualizationBiovisualizationBiovisualization
� The visualization of
biological data;
� Often grouped with
computer animation
VISUALIZATION APPLICATIONS
BioVis
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VISUALIZATION
BioVis
InfoVis
GeoVis
Scientific Visualization
VISUALIZATION OF BIOLOGICAL DATA
Sof tware ApplicationsSof tware ApplicationsSof tware ApplicationsSof tware Applications
� SCIRun
� Seg3D
� ShapeWorks
� ImageVis3d
� FluoRender
� Clever
CIBC Software Suite can be downloaded
from http://www.sci.utah.edu/cibc-
software/
Biological Data
Information VisualizationInformation VisualizationInformation VisualizationInformation Visualization
� Interdisciplinary
� Study of the “visual representation of large-scale collections of non-numerical information
� Files and lines of code in software systems
� Library and bibliographic databases, networks of relations on the internet, etc.
VISUALIZATION APPLICATIONS
InfoVis
VISUALIZATION
BioVis
InfoVis
GeoVis
Scientific Visualization
VISUALIZATION OF NON-NUMERICAL DATA
Software ApplicationsSoftware ApplicationsSoftware ApplicationsSoftware Applications
http://gephi.github.io/
http://www.tableausoftware.com
http://d3js.org/
Typically, non-
numerical
information
Geographic VisualizationGeographic VisualizationGeographic VisualizationGeographic Visualization
� Refers to a set of tools and techniques supporting geospatial data analysis through the use of interactive visualization
� Communicates geospatial information in ways that, when combined with human understanding, allow for data exploration and decision-making processes
VISUALIZATION APPLICATIONS
GeoVis
VISUALIZATION
BioVis
InfoVis
GeoVis
Scientific Visualization
Geospatial Data
VISUALIZATION OF GEOSPATIAL DATA
Software Software Software Software
ApplicationsApplicationsApplicationsApplications� GIS software: Arcgis
(includes 3D and web),
qgis, geoda
� Visualization
software (no GIS
analysis): Cartodb,
mapbox, Tableau,
Google fusion tables,
Google Earth
Scientific VisualizationScientific VisualizationScientific VisualizationScientific Visualization
� Primarily concerned
with the visualization of
three-dimensional
phenomena
� Emphases on realistic
renderings of volumes,
surfaces, illumination
sources, etc.
VISUALIZATION APPLICATIONS
SciVis
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VISUALIZATION
BioVis
InfoVis
GeoVis
Scientific Visualization
VISUALIZATION OF SIMULATED DATA
Software ApplicationsSoftware ApplicationsSoftware ApplicationsSoftware Applications
https://wci.llnl.gov/simulation/computer-
codes/visit/
http://www.paraview.org/
VISUALIZATION
BioVis
InfoVis
GeoVis
Scientific Visualization
THE DATA
Biological Data
Non-numerical
Data
Geospatial Data
Simulated, 3D Data
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YOU’VE GOT DATA NOW
WHAT?
� What will your contribution be to the project?
� How do you plan to implement the concept?
� What previous research will your work build on?
� Are there research papers related to your project that you
should read (this is a good question to ask your mentors)?
� What does the data you will be visualizing look like?
THE ESSENTIALS
Laramee, RS. How to Read a Visualization Research Paper: Extracting the Essentials, IEEE Computer Society, May/June 2011, p78-82.
� Find some data to visualize
� Must be public data
� Find a visualization that you like and be prepared to share it
with the group
YOUR ASSIGNMENT
Vetria (Vee-Tree-Ah) L. Byrd, PhD
Advanced Visualization, Director
Visualization Scientist
B100 Barre Hall
Email: [email protected]
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Thank You!
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