❗️Challenges and Pitfalls of Data Visualization ⠀ ⠀ Presented in Rome, during the #ITOUG Tech Days 2020. I shared my vision on storytelling with data and visualizations. Two short tips:⠀ ⠀ ✅ Keep it Simple Stupid - KISS⠀ ✅ Less is More

1. ITOUG Tech Days
January 2020
Milan & Rome
Challenges and Pitfalls
of
Data Visualization

2. Daan Bakboord
https://www.daanbakboord.com/
https://twitter.com/daanbakboord
https://nl.linkedin.com/in/daanbakboord
https://www.daanalytics.nl/blog
#obihackers
Challenges and Pitfalls of Data Visualization | January 2020
https://www.pong.nl/

3. Agenda
• Introduction
• Mind
• Perception
• Psychology
• Thinking
• Dashboard Design
Challengesand Pitfallsof Data Visualization

4. Initiatives
IT IT IT
Reliable Information/ Insights
A BChange/Policy / Strategy
Data

5. https://www.oracle.com/business-analytics/data-visualization/examples.html

7. A picture says more than a
thousand words

8. What’s your Story?

12. Visual Perception

13. Visual Perception

14. Visual Perception

15. Visual Perception

16. Visual Perception - Process
Register Observe&Interpret

17. Visual Perception
• Iconic Memory
• letters,colors,digits,shapes,etc.
• e.g. Computerbuffer
• Short Term memory
• chunksofinformationFiFo
• e.g. RandomAccess Memorie (RAM)
• Long Term memory
• recognise people, events,patterns,etc.
• e.g. Computerharddisk

18. “Gestalt” Psychology
Overall picture beforeperception of components
Figure /
Ground
Law ofGroupingWhole
is more than
Sum ofParts

19. It’s all about Perception

20. Gestalt Principles of Perception
Closure
Proximity
Similarity
Continuation
Prägnanz (Good Figure, Simplicity)

21. Optical Illusion

22. Optical Illusion

23. Two SystemWay of Thinking
• System I
• ThinkingFast
• Intuitive, “Gut”reaction
• Jump toConclusion
• “AlwaysOn”
• System II
• ThinkingSlow
• Reflection
• Problemsolving
• Analysing

24. Dashboard Design
• Present information Logical andOrdered
• Signaling should beClear and Unambiguous
• Choose the right Visualization
• Don’tgive SystemI theopportunitytogo wrong
• Optimal balance between System I & System 2
• Focus on the coremessage

25. Subconscious Attributes
• Color (Intensity)
• Shape
• Positioning
• Motion

26. Using Color
98675321098739873947612902
16438902451209137828462010
08345601395660087414383020
47294901837900298265150137
Count the number ‘5’

27. Using Color
98675321098739873947612902
16438902451209137828462010
08345601395660087414383020
47294901837900298265150137
98675321098739873947612902
16438902451209137828462010
08345601395660087414383020
47294901837900298265150137
Count the number ‘5’

28. Color Blind
ExperienceColorBlindnessvia Color Oracle

29. Right
Wrong
Using Color
Associations
B & W Printing
Toomuch color –where to focus?

30. Data Ink Ratio
Edward Tufte

31. Data Ink Ratio
Edward Tufte

32. Data Ink Ratio
Edward Tufte

33. Data Ink Ratio
• Minimize the Data Ink Ratio as
muchas possible
• Increase the Data Ink Ratio if
necessary to tell the story

34. Graphs

35. Graphs

36. After a demobyan Account Manager
Visuals

37. Report

38. Stephen Few
http://www.perceptualedge.com/

39. Stephen Few
Bullet GraphSparkLine

40. JQuery

41. Data VisualizationExtensions(DVD SDK)
https://www.oracle.com/business-analytics/data-visualization/extensions.html

42. How to Choose the Chart Type

43. See the Signals
• OurBrains are better suited to process Images
• Turn complex data sets into Easy to Digest
and Supporting Insights
• Identify interesting Patterns and
Opportunities and Previously Unknown
Trends

44. Advice

45. Questions?

46. Thanks!