A presentation by Hjalmar Gislason, founder and CEO of DataMarket, at the fifth meetup of the Data Scientist Seminar Series in Boston.

1. F I N D A N D U N D E R S TA N D D ATA
Visualizations & Storytelling
Data Scientist Seminar Series Dec 3, 2012

2. Hjalmar
Gislason
Founder and CEO
Twitter: @datamarket
Slides: http://blog.datamarket.com/

3. TOPICS
‣ Background and philosophy
‣ Visualization types
‣ Tools and technology
‣ Storytelling - by example

4. NUMBERS
drive our world

5. Finding and publishing
numerical data is
HARD

6. GOOGLE
for numbers

7. Wasn’t this supposed to be about
VISUALIZATION?

10. 109 columns
x
340 lines
=
37.060 cells

14. One-off projects
vs. a
generic solution

19. More than
200,000,000
time series

20. 45.000+
data sets

21. 822 years
1279 - 2100

22. PHILOSOPHY
1. Master the best-known chart types first.
2. Play on them IF needed to communicate your message.
3. If you’re inventing a new visualization type from
scratch, you’re doing it wrong!
4. Simplicity is the ultimate sophistication.

23. Infograph vs Data vis
It’s a question of purpose!

24. DM’s Core Chart Types
Basic type Variations
Tables 2
Line charts 4
Bar and column charts 8
Scatter / bubble charts 2
Maps 1

25. Basic Table

26. Line charts

27. Relative Line Charts

28. Stacked Area Chart

29. 100% Stacked Area chart

30. Bar Chart

31. Clustered Bar Chart

32. Stacked Bar Chart

33. 100% Stacked Bar Chart

34. Column Chart

35. Stacked Column Chart

36. 100% Stacked Col. Chart

37. Current Values & Change

38. Pie Chart (Good)

39. Pie Chart (Bad)

40. Better than Pie Chart...

41. Scatter / Bubble
Brand recognition
Brand image

42. Choropleth Map

43. TOOL for the TASK

44. TOOLS
One-off charts
Tableau DataGraph R
See also RStudio

45. TOOLS
Videos & custom high-res graphics
Processing

46. TOOLS
Charts for the Web
HighCharts gRaphaël

47. TOOLS
Special Development Requirements
Raphaël Protovis D3

48. STORYTELLING

49. http://vis.stanford.edu/files/2010-Narrative-InfoVis.pdf

55. TOPICS
‣ Background and philosophy
‣ Visualization types
‣ Tools and technology
‣ Storytelling - by example

56. F I N D A N D U N D E R S TA N D D ATA
Hjalmar Gislason, founder & CEO
Twitter: @datamarket · Facebook: DataMarket · E-mail: hg@datamarket.com