Data Visualisation by Olivier Lorrain

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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.

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Data Visualisation by Olivier Lorrain

  1. 1. Data Visualisationinspired by Toby Segaran ~ Webstock<br />By Olivier Lorrain<br />April 8, 2010<br />www.olivierlorrain.com<br />
  2. 2. Data Visualisation<br />“The main goal of data visualization is its ability to visualize data, communicating information clearly and effectivelty.” <br />Vital Friedman, editor-in-chief of www.smashingmagazine.com<br />
  3. 3. To Make a Point<br />Impact of One child policy 1979<br />Source: www.census.gov/ipc/www/idb/informationGateway.php<br />
  4. 4. To Form a Hypothesis<br />China’s Population: 1 330 000 000<br />Which country will be the most populous in 2030?<br />India’s Population: 1 173 000 000<br />Source: www.census.gov/ipc/www/idb/informationGateway.php<br />
  5. 5. To Help Achieve a Goal <br />Task in a Power plant: Monitor Temperature of Liquid B<br />Temperature (C)<br />Temperature (C)<br />56.2<br />Digital<br />Dial<br />
  6. 6. To Help Achieve a Goal <br />Task in a Power plant: Monitor Temperature of Liquid B<br />Temperature (C)<br />Threshold<br />Threshold<br />Time (min)<br />
  7. 7. 7<br />Gender balance<br /><ul><li> 12% of corporate board members from the sample were female
  8. 8. 21% of the lines are women</li></ul>Cluster<br /><ul><li> West vs East</li></ul>Toby Segaran - Corporate map: http://dev.mqlx.com/~toby/corporate_map.png<br />
  9. 9. 8<br />Gender balance<br /><ul><li> 12% of corporate board members from the sample were female
  10. 10. 21% of the lines are women</li></ul>Cluster<br /><ul><li> West vs East</li></ul>discover patterns<br />Toby Segaran - Corporate map: http://dev.mqlx.com/~toby/corporate_map.png<br />
  11. 11. Dull Table or Animated Data<br />3800 US stores in 2005<br />Growth of WalMart blog.kiwitobes.com/?p=51<br />
  12. 12. 3D Pie Chart<br />
  13. 13. Pie Chart<br />
  14. 14. 3D Pie Chart<br />7<br />20<br />38<br />15<br />20<br />Visual bias – Avoid 3D graphs<br />
  15. 15. Bar Chart<br />
  16. 16. Large Network<br />More about beauty then useful<br />Source: www.solidsourceit.com/products/SolidSX-source-code-dependency-analysis.html<br />
  17. 17. Helps track expensesvssavings <br />Source: www.bnz.co.nz<br />
  18. 18. Helps uncover patterns<br />Source: www.bnz.co.nz<br />
  19. 19. Data visualisation could be a powerful communication tool<br />Always bear in mind the users / audience of the data visualisation<br />Key Points<br />
  20. 20. Toby Segaran - http://kiwitobes.com<br />Gap Minder – Debunking myths about the “third world”<br />www.gapminder.org/videos/ted-talks/hans-rosling-ted-2006-debunking-myths-about-the-third-world/<br />Data Visualisation tools<br />www.yworks.com/en/products.html<br />www.graphviz.org/<br />Edward Tufte – Visual Explanationswww.edwardtufte.com/tufte<br />Further Reading<br />
  21. 21. Free data<br />Freebase – www.freebase.com<br />OECD - http://stats.oecd.org/index.aspx<br />Statistic NZ - http://search.stats.govt.nz/nav/0<br />Demographic<br />David Foot, Boom, Bust and Echo - http://www.footwork.com/book.asp<br />Further Reading<br />
  22. 22. Blog: www.olivierlorrain.com<br />Flickr: olorrain<br />

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