Working with Text

11:00-12:30

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Outline

• Labels + theme()
• Labels + scale_*()
• Styling Labels with {ggtext}
• Facet Labellers
• Handling Long Labels
• Annotations
• Exercises

Recap

• style labels such as title, axis and legend texts with theme()
• format data-related labels with the labels argument of scale_*()
• adjust strip text with the facet_*(labeller) functionality
• add data-related annotations with geom_text|label()
• … and data-unrelated annotations with annotate()
• {ggtext} allows to render labels with markdown and basic html
• {ggtext} also allows to add dynamic linebreaks and images
• {ggrepel} ensures clever placement of annotations
• ggforce::geom_mark_*() provide a set of advanced annotations

Exercises

Exercise 1

• Take a look at the following visualization.
  • For each group of text labels, note how one would add and modify them.
  • Discuss how to automate the placement of the labels in- and outside of the bars.

Exercise 2

• Create a function that plots the famous Gapminder chart, highlighting one of the continents.
  • Extend the code in 02-text-exercises.qmd to annotate a continent your choice of with {ggforce}.
  • Turn the code into a function with the utility to annotate any continent.
  • Optional: Create a second function to highlight a country.

Exercise Template | Solution