Date post: | 28-Jul-2015 |
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Explore Data:Data Science + Visualization
Roelof PietersPhD candidate at KTH & Data Science consultant.
@graphific
(much thanks & graph love to fellow presenter Jay Solomon* / Augify)
*who unfortunately couldn't make it today
Title
Data journalism / Faces of Frackinghttp://www.facesoffracking.org/data-visualization/
Infographics design / Nobel Prizes and laureates 1901-2012 by Accurathttp://www.accurat.it
Gephi gephi.github.io
Tableau www.tableausoftware.com
Bokeh bokeh.pydata.org/en/latest/
Processing processing.org
R-ggplot2 ggplot2.org
Visualisation tools
d3.js d3js.org
Visualization is data communicated visually “with clarity, precision and efficiency” (Tufte)
Defined?
The goal of visualization is to aid our understanding of data by leveraging the human visual system's highly-tuned ability to see patterns, spot trends, and identify outliers.
Well-designed visual representations can replace cognitive calculations with simple perceptual inferences and improve comprehension, memory, and decision making.
By making data more accessible and appealing, visual representations may also help engage more diverse audiences in exploration and analysis.
The challenge is to create effective and engaging visualizations that are appropriate to the data. A Tour Through the Visualization Zoo. Jeffrey Heer, Michael Bostock, and Vadim Ogievetsky.
The challenge is to create effective and engaging visualizations that are appropriate to the data.
A Tour Through the Visualization Zoo. Jeffrey Heer, Michael Bostock, and Vadim Ogievetsky.
How do you move from data to visualization?
How do you determine the appropriate visualization for your data?
How do you use visualizations to create meaning and extract valuable insights?
And many questions..
Position SizeShape ColorMetaphor
Sequence StructureContentLanguage
InteractivityAdaptabilityDiscoveryReactionFamiliarity
Visual Storytelling Experience1 2 3
The goal of visualization is to aid our understanding of data by leveraging the human visual system's highly-tuned ability to see patterns, spot trends, and identify outliers.A Tour Through the Visualization Zoo. Jeffrey Heer, Michael Bostock, and Vadim Ogievetsky.
How would you visualize proportion?
Pie Donut Nightingale Voronoi
Stacked area chart Stacked bar Treemap
72% 68% 50% 47%
“Sneaker pickup”
videos
“First Impressions”
videos
Product “Review”
videos
“Haul” videos
Every decision counts; position, size and shape.
Growing genres of product reviews on youtubehttps://www.thinkwithgoogle.com/articles/i-want-to-buy-moments.html
72% 68% 50% 47%“Sneaker pickup”
videos
“First Impressions”
videos
Product “Review”
videos
“Haul” videos
Every decision counts; position, size and shape.
(Our version)
http://www.nytimes.com/newsgraphics/2014/01/05/poverty-map/Color as a natural quantifier (Tufte)
http://www.nytimes.com/newsgraphics/2014/01/05/poverty-map/
http://www.nytimes.com/newsgraphics/2014/01/05/poverty-map/Color as metaphor and meaning
http://demographics.coopercenter.org/DotMap/index.html
http://www.nytimes.com/newsgraphics/2014/01/05/poverty-map/Color as metaphor and meaning
http://demographics.coopercenter.org/DotMap/index.html
http://www.nytimes.com/newsgraphics/2014/01/05/poverty-map/
From “Envisioning Information”, Tufte. General Bathymetric Chan of the Oceans, International Hydrographic Organization (Ottawa, Canada, 5th edition, 1984), 5.06.
Color as metaphor and meaning
Title
http://drones.pitchinteractive.com
http://www.nytimes.com/newsgraphics/2014/01/05/poverty-map/Shape as visual metaphor
http://drones.pitchinteractive.com
http://www.nytimes.com/newsgraphics/2014/01/05/poverty-map/Shape as visual metaphor
http://chrisharrison.net/projects/bibleviz/BibleVizArc7.png
Stories are made of conceptually separable episodes or sub-goals in a chain of actions that form the story’s plot.
Stories contain microstructures via the particular details of an event and macro-structure via the relationship of those events to one another in the plot
A Deeper Understanding of Sequence in Narrative Visualizsation. Hullman, Drucker, Riche…
Scroll through episodes / New York Times data driven stories
http://www.nytimes.com/interactive/2014/06/12/world/middleeast/the-iraq-isis-conflict-in-maps-photos-and-video.html
Animated sequence / 2015 Measles outbreak
http://www.bloomberg.com/graphics/2015-measles-outbreaks/
Animated sequence / 2015 Measles outbreak
http://www.bloomberg.com/graphics/2015-measles-outbreaks/
Animated sequence / Bloomberg business
http://www.bloomberg.com/news/articles/2015-03-04/u-s-companies-are-stashing-2-1-trillion-overseas-to-avoid-taxes
Layering the data / Poverty Tracker, CPRC
http://povertytracker.robinhood.org
Interactive visualization / New York Times
http://www.nytimes.com/interactive/2014/upshot/buy-rent-calculator.html
3How do you enable the user to interact with the visualization & discover relevant insights?
Experience
What is the story you want to tell?Unfocused query generates irrelevant story
#1 Query
What is the story you want to tell?
Identify appropriate data
Determine what question to ask
Guide through suggestions
=
INSIGHT
Like a novel, a narrative can be read through the
characters, the context, the events, the emotional
landscape
Enable exploration and discovery Reveal the data at several levels of detail, from a broad overview to the fine structure
#3 Filter
http://www.informationisbeautiful.net/visualizations/snake-oil-superfoods/
Filters
Silders to explore and see change http://www.nytimes.com/interactive/2014/07/08/upshot/how-the-year-you-were-born-influences-your-politics.html?abt=0002&abg=0
‘What if’ scenariohttp://www.nytimes.com/interactive/2014/11/04/health/visuals-ebola-model.html
http://www.nytimes.com/interactive/2014/11/04/health/visuals-ebola-model.html
‘What if’ scenario
Sometimes less is more Think of layering and separation of the data visualization, reduce the noise and let the content shine
#4 Options
Focused view / Connect the world cup
http://www.nytimes.com/interactive/2014/06/20/sports/worldcup/how-world-cup-players-are-connected.html
Reduce the noise / What can you discover when you reduce the noise? Outliers, focused question and answer….
Reduce the noise / What can you discover when you reduce the noise? Outliers, focused question and answer….
Reduce the noise / What can you discover when you reduce the noise? Outliers, focused question and answer….
Divide the story to relevant portions. A complex graph may not be enough. Look at the micro vs. macro stories and how they help extract insights.
Try different metrics
#5 Insights
Small multiples / A visual guide to the crisis in Iraq and Syria.
http://www.nytimes.com/interactive/2014/06/12/world/middleeast/the-iraq-isis-conflict-in-maps-photos-and-video.html
Interactive linked small multiples / Close the gap
http://ri.id.au/closethegap
#7 Experiment & test your hypothesis… Until you find the best visual representation
Visualization that answers a question: Who is most affected?
http://www.nytimes.com/interactive/2013/05/27/science/drunk-driving-2011.html?_r=0
(S. Carmi,S. Havlin, S. Kirkpatrick, Y. Shavitt, E. Shir. A model of Internet topology using k-shell decomposition.
PNAS 104 (27), pp. 11150- 11154, 2007)
Internet as a Graph
(S. Papadopoulos, Y. Kompatsiaris, A. Vakali, P. Spyridonos. “Community detection in Social Media” 2011)