Talk at the Wellington Web Design Meetup on April 8, 2010. Data visualization is used to communicate : To make a point, to form a hypothesis, to help achieve a goal.

1. Data Visualisationinspired by Toby Segaran ~ Webstock By Olivier Lorrain April 8, 2010 www.olivierlorrain.com

2. Data Visualisation “The main goal of data visualization is its ability to visualize data, communicating information clearly and effectivelty.” Vital Friedman, editor-in-chief of www.smashingmagazine.com

3. To Make a Point Impact of One child policy 1979 Source: www.census.gov/ipc/www/idb/informationGateway.php

4. To Form a Hypothesis China’s Population: 1 330 000 000 Which country will be the most populous in 2030? India’s Population: 1 173 000 000 Source: www.census.gov/ipc/www/idb/informationGateway.php

5. To Help Achieve a Goal Task in a Power plant: Monitor Temperature of Liquid B Temperature (C) Temperature (C) 56.2 Digital Dial

6. To Help Achieve a Goal Task in a Power plant: Monitor Temperature of Liquid B Temperature (C) Threshold Threshold Time (min)

11. Dull Table or Animated Data 3800 US stores in 2005 Growth of WalMart blog.kiwitobes.com/?p=51

12. 3D Pie Chart

13. Pie Chart

14. 3D Pie Chart 7 20 38 15 20 Visual bias – Avoid 3D graphs

15. Bar Chart

16. Large Network More about beauty then useful Source: www.solidsourceit.com/products/SolidSX-source-code-dependency-analysis.html

17. Helps track expensesvssavings Source: www.bnz.co.nz

18. Helps uncover patterns Source: www.bnz.co.nz

19. Data visualisation could be a powerful communication tool Always bear in mind the users / audience of the data visualisation Key Points

20. Toby Segaran - http://kiwitobes.com Gap Minder – Debunking myths about the “third world” www.gapminder.org/videos/ted-talks/hans-rosling-ted-2006-debunking-myths-about-the-third-world/ Data Visualisation tools www.yworks.com/en/products.html www.graphviz.org/ Edward Tufte – Visual Explanationswww.edwardtufte.com/tufte Further Reading

21. Free data Freebase – www.freebase.com OECD - http://stats.oecd.org/index.aspx Statistic NZ - http://search.stats.govt.nz/nav/0 Demographic David Foot, Boom, Bust and Echo - http://www.footwork.com/book.asp Further Reading

22. Blog: www.olivierlorrain.com Flickr: olorrain