Time

Oct 21, 2025

Readings

Chapter 13: Visualizing time series of Fundamentals of Data Visualization
Chapter 14: Visualizing trends of Fundamentals of Data Visualization

Optional readings

Chapter 17: Dates and times of R for Data Science (2e)
11 Ways to Visualize Changes Over Time – A Guide

Guiding questions

When is it okay (or not) to truncate the y-axis?
Many types of charts can communicate changes over time, but some are more appropriate in different situations. When is it best to use some of the different types (e.g., line graphs vs. area graphs vs. horizon charts vs. heatmaps, etc.)?

Slides

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Fun fact: If you type ? (or shift + /) while going through the slides, you can see a list of special slide-specific commands.