Advanced Visualizations
Transcript of Advanced Visualizations
Data Visualization Nikhil Srivastava, 2015
• What is Data Visualization?
• Thinking and Seeing
• From Data to Graphics
• Principles and Guidelines
• Highcharts and Javascript
• Class Project
introduction
foundation & theory
building blocks
design & critique
construction
Class Summary
Data Visualization Nikhil Srivastava, 2015
Data Visualization is:
• Useful
– Answers questions
– Reduces workload
Data Visualization Nikhil Srivastava, 2015
Data Visualization is:
• Useful
• Important
– Understand structure
– Resolve ambiguity
– Locate outliers
Data Visualization Nikhil Srivastava, 2015
Data Visualization is:
• Useful
• Important
– Design decisions affect interpretation
Data Visualization Nikhil Srivastava, 2015
Data Visualization is:
• Useful
• Important
• Powerful
– Communicate
– Teach
– Inspire
Data Visualization Nikhil Srivastava, 2015
Data Visualization is:
• Useful
• Important
• Powerful
• Relevant
Data Visualization Nikhil Srivastava, 2015
• What is Data Visualization?
• Thinking and Seeing
• From Data to Graphics
• Principles and Guidelines
• Highcharts and Javascript
• Class Project
introduction
foundation & theory
building blocks
design & critique
construction
Data Visualization Nikhil Srivastava, 2015
Vision: The Software• High-level concepts: objects,
symbols
• Involves working memory
• Slow, sequential, conscious
• Sensory input
• Low-level features: orientation,
shape, color, movement
• Rapid, parallel, automatic
Visual Perception
“Bottom-up”
“Top-down”
Data Visualization Nikhil Srivastava, 2015
Eye != Camera
Data Visualization Nikhil Srivastava, 2015
• What is Data Visualization?
• Thinking and Seeing
• From Data to Graphics
• Principles and Guidelines
• Highcharts and Javascript
• Class Project
introduction
foundation & theory
building blocks
design & critique
construction
Data Visualization Nikhil Srivastava, 2015
From Data to Graphics
What kind
of data do
we have?
How can we
represent the
data visually?
How can we
organize this into
a visualization?
Athi River Machakos 139,380
Awasi Kisumu 93,369
Kangundo-Tala Machakos 218,557
Karuri Kiambu 129,934
Kiambu Kiambu 88,869
Kikuyu Kiambu 233,231
Kisumu Kisumu 409,928
Kitale Trans-Nzoia 106,187
Kitui Kitui 155,896
Limuru Kiambu 104,282
Machakos Machakos 150,041
Molo Nakuru 107,806
Mwingi Kitui 83,803
Naivasha Nakuru 181,966
Nakuru Nakuru 307,990
Nandi Hills Trans-Nzoia 73,626
Visual Encoding
Data Visualization Nikhil Srivastava, 2015
Data TypesCATEGORICAL ORDINAL NUMERICAL
Interval Ratio
Male / Female
Asia / Africa / Europe
True / False
Small / Med / Large
Low / High
Yes / Maybe / No
Time
Latitude/Longitude
Compass direction
Time
Length
Count
= = = =
< > < > < >
+ - + -
* /
Data Visualization Nikhil Srivastava, 2015
More Chart Types
• Stacked/Grouped Charts
• Treemap
• Multi-level Pie
• Heat Map
• Choropleth/Cartogram
Data Visualization Nikhil Srivastava, 2015
• What is Data Visualization?
• Thinking and Seeing
• From Data to Graphics
• Principles and Guidelines
• Highcharts and Javascript
• Class Project
introduction
foundation & theory
building blocks
design & critique
construction
Data Visualization Nikhil Srivastava, 2015
Design Principles
• Integrity
– Tell the truth with data
• Effectiveness
– Achieve visualization objectives
• Aesthetics
– Be compelling, vivid, beautiful
Data Visualization Nikhil Srivastava, 2015
Examples
Data Visualization Nikhil Srivastava, 2015
• What is Data Visualization?
• Thinking and Seeing
• From Data to Graphics
• Principles and Guidelines
• Highcharts and Javascript
• Class Project
introduction
foundation & theory
building blocks
design & critique
construction
Data Visualization Nikhil Srivastava, 2015
• What is Data Visualization?
• Thinking and Seeing
• From Data to Graphics
• Principles and Guidelines
• Highcharts and Javascript
• Class Project
introduction
foundation & theory
building blocks
design & critique
construction
Data Visualization Nikhil Srivastava, 2015
The Ebb and Flow of Movies
NY Times, 2008
Advanced Visualizations
Data Visualization Nikhil Srivastava, 2015
Word Cloud - “Data Visualization” Wikipedia PageWordle
Data Visualization Nikhil Srivastava, 2015
Twitter NetworksPJ Lamberson, 2012
Data Visualization Nikhil Srivastava, 2015
Blogs
• Infosthetics.com
• Visualizing.org
• FlowingData.com
Data Visualization Nikhil Srivastava, 2015
Class Website
• Send me your final projects!
• Will be updated with future classes