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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.

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

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  • 1. #comdaybeDATA VISUALIZATIONTIPS & TRICKSSQLUG.be – Koen Verbeeck & Valentino Vranken
  • 2. WHO ARE WE?BI ConsultantBoard MemberMost ValuableExpertblog.hoegaerden.be@ValentinoV42
  • 3. WHO ARE WE?BI ConsultantMCSE SQL 2012MCCblogs.lessthandot.com@Ko_Ver
  • 4. tipsDATA 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 y10 8,048 6,9513 7,589 8,8111 8,3314 9,966 7,244 4,2612 10,847 4,825 5,68
  • 7. WHY VISUALIZE?
  • 8. WHY VISUALIZE?
  • 9. RESOURCES
  • 10. establish intentTIP #1
  • 11. ESTABLISH INTENT• explanatory–strategic–operational• analytical• exhibition
  • 12. STRATEGIC• “executive” dashboard• high-level• limited/no interaction• not real-timeInformation Dashboard Design p. 177 – StephenFew
  • 13. OPERATIONAL• immediate & dynamic• deeper level of detail• limited/no interaction• real-timeInformation Dashboard Design p. 199 – StephenFew
  • 14. ANALYTICAL• deeper level of detail• interactions with data• not real-time• more complexInformation Dashboard Design p. 201 – StephenFew
  • 15. EXHIBITION• “data art”• self-expression throughraw data• more emotivehttp://www.biodiaspora.com
  • 16. use the correct chart typeTIP #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 wholerelationships–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 perceptionTIP #3
  • 25. VISUAL PERCEPTION• visual encode data for rapid perception• 1389245678971321654987132189456423151560321654256487450005121736545023454351021545454987840579218600479333470• 1389245678971321654987132189456423151560321654256487450005121736545023454351021545454987840579218600479333470
  • 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. COLORhttp://en.wikipedia.org/wiki/File:FrancePopulationDensity1968.pnghttp://www.theusrus.de/blog/the-good-the-bad-22012/
  • 30. COLOR• do not forget those 10%
  • 31. reduce data/ink ratioTIP #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&AtipsDATA VISUALIZATION
  • 36. tricksDATA 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 reportsTRICK #1
  • 39. tables with alternating colorsTRICK #2
  • 40. consistent dynamic colorsTRICK #3
  • 41. Q&AtricksDATA VISUALIZATION
  • 42. TRICKS - REFERENCES• Creating multiple-column reportshttp://blog.hoegaerden.be/2012/11/01/creating-multiple-column-reports/• Looking up data on different sourceshttp://blog.hoegaerden.be/2010/05/16/looking-up-data-on-different-sources/• Formatting numbershttp://blog.hoegaerden.be/2013/06/12/formatting-numbers-ssrs/• More trickshttp://blog.hoegaerden.be/articles/
  • 43. CONTACT INFORMATION• blogs.lessthandot.com/index.php/All/?disp=authdir&author=940• @Ko_Ver• Koen.Verbeeck@ordina.be• blog.hoegaerden.be• @ValentinoV42• valentino@hoegaerden.be
  • 44. Thanks!tips & tricksDATA VISUALIZATION

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