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# Data visualization

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### Data visualization

1. 1. Data Visualization<br />The Ideas of Edward Tufte<br />
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4. 4. Graphical Excellence<br />
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9. 9. Graphical Integrity<br />
10. 10. \$0<br />\$(11,014)<br />\$(11,014)<br />
11. 11. Lie<br />
12. 12. Lie Factor<br />πππ§πΒ ππΒ πΈπππππ‘Β πhππ€πΒ πΌπΒ πΊπππhπππππ§πΒ ππΒ πΈπππππ‘Β πΌπΒ π·ππ‘π<br />Β <br />
13. 13. Lie<br />Graphical Increase = 783%<br />Lie Factor=14.8<br />Data Increase = 53%<br />
14. 14. Truth<br />
15. 15. Graphical Change = 527%<br />Lie Factor=2.8<br />Data Change = 188%<br />
16. 16. Graphical Change = 27,000%<br />Lie Factor=48.8<br />Data Change = 554%<br />
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20. 20. Context<br />
21. 21. Before stricter<br />enforcement<br />After stricter<br />enforcement<br />
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24. 24. NY<br />MA<br />CT<br />RI<br />
25. 25. Principles of Graphical Integrity<br />Data Representations proportional to Data<br />Real dollars, instead of deflated dollars<br />#Dimensions in graph = #Dimensions in data<br />Provide context<br />
26. 26. Data-Ink<br />
27. 27. Data-Ink Ratio<br />= π·ππ‘πΒ πΌπππππ‘ππΒ πΌππ<br />Β <br />
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44. 44. Principles<br />Above all else, show the data<br />Maximize the data-ink ratio, within reason<br />Erase non-data-ink<br />Erase redundant data-ink<br />Revise and edit<br />
45. 45. Chart JunkVibrations, Grids, and Ducks<br />
46. 46. Vibrations<br />
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53. 53. Worst. Graph. Ever.<br />
54. 54. Multifunctioning Graphical Elements<br />
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58. 58. Takeaways<br />Maintain Graphical Integrity<br />Minimize Data-Ink Ratio, within reason<br />Avoid Chartjunk<br />Use Multifunctioning Graphical Elements, if possible<br />Keep Labels with data<br />
59. 59. Dr. Edward Tufte<br />
60. 60. David Giard<br />MCTS, MCSD, MCSE, MCDBA<br />blog: DavidGiard.com<br />tv: TechnologyAndFriends.com<br />e-mail: DavidGiard@DavidGiard.com<br />
61. 61. Davidβs Speaking Schedule<br />