Data Visualization Tips & Tricks

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This is the slidedeck for the Data Visualization Tips & Tricks session of Koen Verbeeck and Valentino Vranken at the Belgian Community Day of 2013.

Tecnología Empresariales

#comdaybe
DATA VISUALIZATION
TIPS & TRICKS
SQLUG.be – Koen Verbeeck & Valentino Vranken

WHO ARE WE?
BI Consultant
Board Member
Most Valuable
Expert
blog.hoegaerden.b
e
@ValentinoV42

WHO ARE WE?
BI Consultant
MCSE SQL 2012
MCC
blogs.lessthandot.c
om
@Ko_Ver

TIPS - AGENDA
• tip #1 – establish intent
• tip #2 – use the correct chart type
• tip #3 – tap into visual perception
• tip #4 – reduce data/ink ratio

WHY VISUALIZE?
x y
10 8,04
8 6,95
13 7,58
9 8,81
11 8,33
14 9,96
6 7,24
4 4,26
12 10,84
7 4,82
5 5,68

ESTABLISH INTENT
• explanatory
–strategic
–operational
• analytical
• exhibition

STRATEGIC
• “executive” dashboard
• high-level
• limited/no interaction
• not real-time
Information Dashboard Design p. 177 – Stephen
Few

OPERATIONAL
• immediate & dynamic
• deeper level of detail
• limited/no interaction
• real-time
Information Dashboard Design p. 199 – Stephen
Few

ANALYTICAL
• deeper level of detail
• interactions with data
• not real-time
• more complex
Information Dashboard Design p. 201 – Stephen
Few

EXHIBITION
• “data art”
• self-expression through
raw data
• more emotive
http://www.biodiaspora.com

CHART TYPES
• comparing categories
–bar chart
–others
• column chart, dot plot, Gantt, histogram …

CHART TYPES
• showing changes over time
–line chart
–others
• sparklines, area chart, candlestick chart, barcode chart …

CHART TYPES
• assessing hierarchies and part-to whole
relationships
–pie charts
–others
• waffle chart, stacked bar chart, tree map …

CHART TYPES
• plotting connections and relationships
–scatter plot
–others
• bubble plot, heat map, network diagram …

CHART TYPES
• mapping geo-spatial data
–bubble plot map

CHART TYPES
• remember: correlation does not mean causation

VISUAL PERCEPTION
• visual encode data for rapid perception
• 138924567897132165498713218945642315156032165425
648745000512173654502345435102154545498784057921
8600479333470
• 138924567897132165498713218945642315156032165425
648745000512173654502345435102154545498784057921
8600479333470

GESTALT PRINCIPLES
• principle of proximity
• principle of similarity

GESTALT PRINCIPLES
• principle of enclosure
• principle of closure

COLOR
• not quantative
• rather use intensity

COLOR
http://en.wikipedia.org/wiki/File:FrancePopulation
Density1968.png
http://www.theusrus.de/blog/the-good-the-bad-
22012/

DATA/INK RATIO
• reduce the non-data pixels
–don’t use 3D effects
–no backgrounds or gradients
–remove grid lines, decoration, borders, fill colors, …
• reduce unnecessary data pixels
–display only what is really needed for the visualization
• highlight most important pixels

TRICKS - AGENDA
• trick #1 – multi-column reports
• trick #2 – tables with alternating colors
• trick #3 – consistent dynamic colors

TRICKS - REFERENCES
• Creating multiple-column reports
http://blog.hoegaerden.be/2012/11/01/creating-multiple-column-reports/
• Looking up data on different sources
http://blog.hoegaerden.be/2010/05/16/looking-up-data-on-different-sources/
• Formatting numbers
http://blog.hoegaerden.be/2013/06/12/formatting-numbers-ssrs/
• More tricks
http://blog.hoegaerden.be/articles/

CONTACT INFORMATION
• blogs.lessthandot.com/index.php/Al
l/?disp=authdir&author=940
• @Ko_Ver
• Koen.Verbeeck@ordina.be
• blog.hoegaerden.be
• @ValentinoV42
• valentino@hoegaerden.be

Thanks!
tips & tricks
DATA VISUALIZATION

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Data Visualization Tips & Tricks

1. #comdaybe DATA VISUALIZATION TIPS & TRICKS SQLUG.be – Koen Verbeeck & Valentino Vranken

2. WHO ARE WE? BI Consultant Board Member Most Valuable Expert blog.hoegaerden.b e @ValentinoV42

3. WHO ARE WE? BI Consultant MCSE SQL 2012 MCC blogs.lessthandot.c om @Ko_Ver

4. tips DATA VISUALIZATION TIPS & TRICKS

5. TIPS - AGENDA • tip #1 – establish intent • tip #2 – use the correct chart type • tip #3 – tap into visual perception • tip #4 – reduce data/ink ratio

6. WHY VISUALIZE? x y 10 8,04 8 6,95 13 7,58 9 8,81 11 8,33 14 9,96 6 7,24 4 4,26 12 10,84 7 4,82 5 5,68

7. WHY VISUALIZE?

8. WHY VISUALIZE?

9. RESOURCES

10. establish intent TIP #1

11. ESTABLISH INTENT • explanatory –strategic –operational • analytical • exhibition

12. STRATEGIC • “executive” dashboard • high-level • limited/no interaction • not real-time Information Dashboard Design p. 177 – Stephen Few

13. OPERATIONAL • immediate & dynamic • deeper level of detail • limited/no interaction • real-time Information Dashboard Design p. 199 – Stephen Few

14. ANALYTICAL • deeper level of detail • interactions with data • not real-time • more complex Information Dashboard Design p. 201 – Stephen Few

15. EXHIBITION • “data art” • self-expression through raw data • more emotive http://www.biodiaspora.com

16. use the correct chart type TIP #2

17. CHART TYPES • comparing categories –bar chart –others • column chart, dot plot, Gantt, histogram …

18. CHART TYPES • showing changes over time –line chart –others • sparklines, area chart, candlestick chart, barcode chart …

19. CHART TYPES • assessing hierarchies and part-to whole relationships –pie charts –others • waffle chart, stacked bar chart, tree map …

20. CHART TYPES • careful with pie charts

21. CHART TYPES • plotting connections and relationships –scatter plot –others • bubble plot, heat map, network diagram …

22. CHART TYPES • mapping geo-spatial data –bubble plot map

23. CHART TYPES • remember: correlation does not mean causation

24. tap into visual perception TIP #3

25. VISUAL PERCEPTION • visual encode data for rapid perception • 138924567897132165498713218945642315156032165425 648745000512173654502345435102154545498784057921 8600479333470 • 138924567897132165498713218945642315156032165425 648745000512173654502345435102154545498784057921 8600479333470

26. GESTALT PRINCIPLES • principle of proximity • principle of similarity

27. GESTALT PRINCIPLES • principle of enclosure • principle of closure

28. COLOR • not quantative • rather use intensity

29. COLOR http://en.wikipedia.org/wiki/File:FrancePopulation Density1968.png http://www.theusrus.de/blog/the-good-the-bad- 22012/

30. COLOR • do not forget those 10%

31. reduce data/ink ratio TIP #4

32. DATA/INK RATIO • reduce the non-data pixels –don’t use 3D effects –no backgrounds or gradients –remove grid lines, decoration, borders, fill colors, … • reduce unnecessary data pixels –display only what is really needed for the visualization • highlight most important pixels

33. DATA/INK RATIO

34. REAL LIFE EXAMPLE

35. Q&A tips DATA VISUALIZATION

36. tricks DATA VISUALIZATION TIPS & TRICKS

37. TRICKS - AGENDA • trick #1 – multi-column reports • trick #2 – tables with alternating colors • trick #3 – consistent dynamic colors

38. multi-column reports TRICK #1

39. tables with alternating colors TRICK #2

40. consistent dynamic colors TRICK #3

41. Q&A tricks DATA VISUALIZATION

42. TRICKS - REFERENCES • Creating multiple-column reports http://blog.hoegaerden.be/2012/11/01/creating-multiple-column-reports/ • Looking up data on different sources http://blog.hoegaerden.be/2010/05/16/looking-up-data-on-different-sources/ • Formatting numbers http://blog.hoegaerden.be/2013/06/12/formatting-numbers-ssrs/ • More tricks http://blog.hoegaerden.be/articles/

43. CONTACT INFORMATION • blogs.lessthandot.com/index.php/Al l/?disp=authdir&author=940 • @Ko_Ver • Koen.Verbeeck@ordina.be • blog.hoegaerden.be • @ValentinoV42 • valentino@hoegaerden.be

44. Thanks! tips & tricks DATA VISUALIZATION

Data Visualization Tips & Tricks

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