Data Visualization for Drought & Cross Border Crisis
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Data Visualization for Drought & Cross Border Crisis
October 31, 2013
Angela Zoss Data Visualization Coordinator
Data & GIS Services, 226 Perkins
http://bit.ly/190FS13
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http://guides.library.duke.edu/datavis/
Data Visualization
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What is Data Visualization?
a general way of talking about anything that converts data sources into a visual representation (charts, graphs, maps, even just tables)
http://guides.library.duke.edu/datavis
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Why Visualize?
• Explain complex concepts quickly and effectively
http://en.wikipedia.org/wiki/Anscombe%27s_quartet
Anscombe’s Quartet
I II III IV
x y x y x y x y
10.0 8.04 10.0 9.14 10.0 7.46 8.0 6.58
8.0 6.95 8.0 8.14 8.0 6.77 8.0 5.76
13.0 7.58 13.0 8.74 13.0 12.74 8.0 7.71
9.0 8.81 9.0 8.77 9.0 7.11 8.0 8.84
11.0 8.33 11.0 9.26 11.0 7.81 8.0 8.47
14.0 9.96 14.0 8.10 14.0 8.84 8.0 7.04
6.0 7.24 6.0 6.13 6.0 6.08 8.0 5.25
4.0 4.26 4.0 3.10 4.0 5.39 19.0 12.50
12.0 10.84 12.0 9.13 12.0 8.15 8.0 5.56
7.0 4.82 7.0 7.26 7.0 6.42 8.0 7.91
5.0 5.68 5.0 4.74 5.0 5.73 8.0 6.89
Property Value
Mean of x 9 (exact)
Variance of x 11 (exact)
Mean of y 7.50 (to 2 decimal places)
Variance of y 4.122 or 4.127 (to 3 decimal places)
Correlation between x and y
0.816 (to 3 decimal places)
Linear regression line y = 3.00 + 0.500x (to 2 and 3 decimal places, respectively)
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Why Visualize?
• Explain complex concepts quickly and effectively
http://en.wikipedia.org/wiki/Anscombe%27s_quartet
Anscombe’s Quartet
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Why Visualize?
• Translate something typically invisible into the visible
http://blogs.library.duke.edu/data/2012/11/12/adding-colored-regions-to-excel-charts/
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Why Visualize?
• Use visuals to contextualize data, tell a story, or possibly even mobilize action around a problem
Hans Rosling – The River of Myths http://www.youtube.com/watch?v=OwII-dwh-bk
http://www.gapminder.org/
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CREATING A VISUALIZATION
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From Data to Graphic
• What data types are present in the data source? • How are the variables likely to relate? • What visualization type seems to be the best fit for
the goal?
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Chart Choosers
http://extremepresentation.typepad.com/blog/2006/09/choosing_a_good.html
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Common Visualization Types Showing Space
See LibGuide (http://guides.library.duke.edu/vis_types) for examples and tools.
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Common Visualization Types Showing Time
See LibGuide (http://guides.library.duke.edu/vis_types) for examples and tools.
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Common Visualization Types Showing Numbers
See LibGuide (http://guides.library.duke.edu/vis_types) for examples and tools.
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Common Visualization Types Showing Relationships
See LibGuide (http://guides.library.duke.edu/vis_types) for examples and tools.
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Design Tips for Graphics
For general tips on designing charts and graphs, see slides from charting workshop:
Top 10 Dos and Don’ts for Charts and Graphs (http://guides.library.duke.edu/topten)
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EXAMPLES
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Somalia famine: how the world responded
http://gu.com/p/35jmt
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Somalia famine: how the world responded
http://gu.com/p/35jmt
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Towards the Environment and Water as Human Rights Alexis Wallace, Kyle Karnuta, and Adrien Comte
http://tinyurl.com/environmentalhumanrights
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South Sudan in Movement Stefani Jones, Kendra Kirsonis, Saira Butt, Danielle Mayall
http://sites.duke.edu/southsudaninmovement/
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Flight & Expulsion
http://www.niceone.org/lab/refugees/
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TOOLS
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TimelineJS
http://timeline.knightlab.com/
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Timeliner
http://timeliner.okfnlabs.org/
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StoryMapJS
http://storymap.knightlab.com/
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Tableau
http://guides.library.duke.edu/tableau
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JMP Pro
https://oit.duke.edu/comp-print/software/license/detail.php?id=4
http://www.jmp.com/support/help/Essential_Graphing.shtml
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Raw
http://raw.densitydesign.org/
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ManyEyes
http://www.ibm.com/manyeyes
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Plot.ly
https://plot.ly/
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Other Tools
• Google Spreadsheets similar to charts in Excel, but more options and can publish an interactive version of the chart, embed into other websites
• Silk (http://www.silk.co/) creates websites and basic maps/visualizations in the browser
• DataWrapper (http://datawrapper.de/) in-browser visualizations (line, bar, pie, donut, table)
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GETTING HELP
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Data & GIS Services
• Data collections, LibGuides, etc. http://library.duke.edu/data/
• Blog (tutorials, announcements, etc.) http://blogs.library.duke.edu/data/
• Walk-in consultations http://library.duke.edu/data/about/schedule.html (or by appointment – [email protected])
• Perkins 226 computing cluster http://library.duke.edu/data/about/lab.html (fast hardware, diverse software)
• Additional workshops http://library.duke.edu/data/news/ (listserv – [email protected])
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Visualization venues at Duke
• Student Data Visualization Contest • Flickr gallery
• Visualization Friday Forum • LINK MediaWall • Library exhibit spaces
http://bit.ly/dukevis
http://bit.ly/VFF2013
http://bit.ly/mediawall
http://library.duke.edu/exhibits
http://bit.ly/viscontest14
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Student Data Visualization Contest http://bit.ly/viscontest14 | http://bit.ly/visgallery • Open to Duke students • Submit any type of visualization • Deadline January 19 • 2014 Awards:
$250/$150/$100 prizes, public exhibits, posters
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QUESTIONS? SUGGESTIONS? [email protected] http://twitter.com/duke_vis