devopsdays boise 2019 visual information · tufte, visual display of quantitative information...
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When the brain processes visual information
Caskey L. Dickson, SREcaskey@{microsoft,gmail,twitter,...}.com
DevOpsDays Boise 2019
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[citation needed]● Tufte, Visual Display of Quantitative Information (1983)● Cleveland, The Elements of Graphing Data (1968, 1994)● Cleveland, Visualizing Data (1994)● Robinson, The Psychology of Visual Illusion (2013)● Huff, How to Lie with Statistics (1954)● Kahneman, Thinking Fast and Slow (2011)● Csíkszentmihályi, Flow (1990)● Robbins, Creating More Effective Graphs (2009)● Zumel, Good Graphs (2009)
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What is Visualization
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123, 456, 13335, 16, 31301, 78, 984
335, 16, 31, ...
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Humans suck at pretty much everything, especially estimation.
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Perception and Thought
Types of Memory
● Iconic(super fast, instinctual)
● Short Term● Long Term
Types of Thought
● Preattentive● Type 1 (instinctive)● Type 2 (deliberative)
Kahneman 2011, Csíkszentmihályi 1990
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Preattentive Thought● Size● Position● Orientation● Curvature● Gray Value● Hue● Shape● Enclosure● Number (up to four)
● Grouping● Proximity● Similarity● Connectedness● Continuity● Symmetry● Closure● Size● Enclosure
Csíkszentmihályi 1990
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Long Distances
@caskeyCleveland 1968/1994
@caskeyCleveland 1968/1994
@caskeyCleveland 1968/1994
@caskeyCleveland 1968/1994
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Angles
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Perpendicular Distance
@caskeyZumel 2009
@caskeyZumel 2009
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@caskeyCleveland 1968/1994
@caskeyCleveland 1968/1994
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Graph The Message
@caskeyZumel 2009
@caskeyZumel 2009
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Scale Matters
@caskeyCleveland 1968/1994
@caskeyCleveland 1968/1994
@caskeyZumel 2009
@caskeyZumel 2009
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Key Takeaways● The brain is weird
● Interpretation of data depends on how it is presented
● The presentation will change the story taken from it
(and likely the actions taken in response)
● Not everyting is “just a graph”
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High Density Plots
@caskeyRobbins 2009
@caskeyRobbins 2009
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Aspects and Banking
@caskeyCleveland 1968/1994
@caskeyCleveland 1968/1994
@caskeyHuff 1954
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Rogues Gallery
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Questions?● Tufte, Visual Display of Quantitative Information (1983)● Cleveland, The Elements of Graphing Data (1968, 1994)● Cleveland, Visualizing Data (1994)● Robinson, The Psychology of Visual Illusion (2013)● Huff, How to Lie with Statistics (1954)● Kahneman, Thinking Fast and Slow (2011)● Csíkszentmihályi, Flow (1990)● Robbins, Creating More Effective Graphs (2009)● Zumel, Good Graphs (2009)