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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
- 9. RESOURCES
- 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
- 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
- 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
- 39. tables with alternating colors TRICK #2
- 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