It’s About Time

Lesson Content

• Characteristics of time-series data
• A short visual history of time-series graphs
• Time-series patterns
• Time-series data visualization Methods
  • Line graph
  • Control chart
  • Candlestick chart
  • Slopegraph
  • Cycle plot
  • Horizon graph
  • Sunburst diagram
  • Calendar Heatmap
  • Stream Graph
• Interactive techniques for time-series data visualisation
• Animation techniques for time-series visualisation

Lesson Slides and Hands-on Notes

• Lesson slides in html and pdf formats

• Handout of Hands-on Exercise 6 in html and pdf formats.

Readings

Core Readings

• A taxonomy of temporal data visualization techniques
• Edward Tufte’s “Slopegraphs”
• Introduction to Cycle Plots
• Visualizing Change: An Innovation in Time-Series Analysis
• The Development of the Horizon Graph
• Candlestick chart

Additional Readings

• Slopegraph Update
• Time on the Horizon
• TimeSearcher
• Understanding Basic Candlestick Charts
• What is a slopegraph?
• Donahue, Rafe M.J. Fundamental Statistical Concepts in Presenting Data: Principles for Constructing Better Graphics. This article provide a real world example of building truthful and functional time series graph.
• Hockey stick graph at wiki.
• Michael E. Mann, Raymond S. Bradley, Malcolm K. Hughes (1999) “Northern hemisphere temperatures during the past millennium: Inferences, uncertainties, and limitations”. Geophysical Research Letters, Vol. 26, No. pp. 759-762.
• The Guardian (2010) “Hockey stick graph took pride of place in IPCC report, despite doubts”.

All About Tableau

• Slopegraphs in Tableau
• Horizon Graph
• Viz Variety Show: When to use heatmap calendars
• Creating a Candlestick chart
• Candlestick Charts and Bollinger Bands