zen of visual analysis (slideshare)
DESCRIPTION
These are the slides from my Oxford Geek Night talk on 22 Jan. I hope they give some inspiration for making great data visualisations!TRANSCRIPT
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The Zen of Visual Analysis
Andy Cotgreave
@acotgreave
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BAD CHARTS
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5 steps…
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1. Why viz?
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Consider these numbers…
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Consider these numbers…
Property Value Mean of x 9
Variance of x 11
Mean of y 7.5 (to 2 dp)
Variance of y 4.122 (to 3 dp)
Correlation 0.816 (3dp)
Linear regression y=3+.5x (3dp)
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Consider these numbers…
Blue Orange
Green Red
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Consider these numbers…
Orange
Green Red
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Consider these numbers…
Green Red
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Consider these numbers…
Red
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Consider these numbers…
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Consider these numbers…
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2. Don’t fool your eyes
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From the Texas School for the Blind and Visually Impaired
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Change blindness
http://www.cs.ubc.ca/~rensink/flicker/download/Airplane.mov
Spot the difference!
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The answer…
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Grey screen: explain importance of Change Blindness
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Grey screen: explain importance of Change Blindness
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http://www.informationisbeautiful.net/visualizations/colours-in-cultures/
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http://www.informationisbeautiful.net/visualizations/colours-in-cultures/
What colour do Asians associate with Purity?
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http://www.informationisbeautiful.net/visualizations/colours-in-cultures/
What colour do Asians associate with Purity?
1
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http://www.informationisbeautiful.net/visualizations/colours-in-cultures/
What colour do Asians associate with Purity?
2
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http://www.informationisbeautiful.net/visualizations/colours-in-cultures/
What colour do Asians associate with Purity?
3
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http://www.informationisbeautiful.net/visualizations/colours-in-cultures/
What colour do Asians associate with Purity?
4
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http://www.informationisbeautiful.net/visualizations/colours-in-cultures/
What colour do Asians associate with Purity?
5
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http://www.informationisbeautiful.net/visualizations/colours-in-cultures/
What colour do Asians associate with Purity?
6
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http://www.informationisbeautiful.net/visualizations/colours-in-cultures/
What colour do Asians associate with Purity?
Beautiful? Functional?
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http://vizcandy.blogspot.ca/p/tableau-8-redoux.html
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3. Exploit the power of the visual system
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From the Texas School for the Blind and Visually Impaired
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In the following slides, which is bigger: B, C or D?
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4. Engage with value, not candy
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http://graphics-info.blogspot.hk/2012/09/malofiej-20-look-at-our-participation.html (Simon Scarr)
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http://graphics-info.blogspot.hk/2012/09/malofiej-20-look-at-our-participation.html (Simon Scarr)
It is possible to make functional charts that are also beautiful
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5. What’s your message?
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http://graphics-info.blogspot.hk/2012/09/malofiej-20-look-at-our-participation.html
The message is delivered by the title, the colour and the axis going down: A Smear Of Blood
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http://graphics-info.blogspot.hk/2012/09/malofiej-20-look-at-our-participation.html
Let’s change the message without changing the data
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http://graphics-info.blogspot.hk/2012/09/malofiej-20-look-at-our-participation.html
Iraq: Deaths on the decline
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http://graphics-info.blogspot.hk/2012/09/malofiej-20-look-at-our-participation.html
Iraq: Deaths on the decline
Now the message is more optimistic
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“When I am working on a problem, I never think about beauty. I only think about how to solve the problem. But when I have finished, if the solution is not beautiful, I know it is wrong.”
- R. Buckminster Fuller
@acotgreave www.gravyanecdote.com
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5 steps…
@acotgreave www.gravyanecdote.com