Working with Labels and Annotations
09:00-10:30
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Outline
- Labels +
theme()
- Working with Labels
- Customize Labels via
theme()
- Labels +
scale_*()
- Format Labels via
scale_*
- Format Labels via
- Labels +
ggtext::element_markdown
- Styling Labels with {ggtext}
- Labels +
facet_*()
- Facet Labellers
- Handling Long Labels
- Handling Long Labels with {stringr}
- Handling Long Labels with {ggtext}
- Handling Long Titles
- Annotations with
annotate()
- Add Single Text Annotations
- Style Text Annotations
- Add Multiple Text Annotations
- Add Boxes (Rectangles)
- Add Lines (Segments)
- Add Curves
- Add Arrows
- Annotations with
geom_*()
- Highlight Hot Periods
- Annotations with
geom_text()
- Annotations with
geom_label()
- Annotations with {ggrepel}
- Annotations with {ggforce}
- Adding Images
- Load and Modify Image
- Add Background Image
- Adjust Position
- Place Image Outside
Recap
- style labels such as title, axis and legend texts with
theme()
- format data-related labels with the
labels
argument ofscale_*()
- adjust strip text with the
facet_*(labeller)
functionality - add data-related annotations with
geom_text|label()
- … and data-unrelated annotations with
annotate()
annotation_custom(rasterGrob())
is a basic way to add images{ggtext}
allows to render labels with markdown and basic html{ggtext}
also allows to add dynamic linebreaks and images{ggrepel}
ensures clever placement of annotationsggforce::geom_mark_*()
provide a set of advanced annotations
Exercises
Exercise 1
- {ggtext} also comes with some new geom’s. Explore those and other options on the package webpage: wilkelab.rg/ggtext.
- Open the script
exercises/05_labels_ex1.qmd
(or the.rmd
). - Create the following visualization, as close as possible, with the
penguins
dataset which is provided by the {palmerpenguins} package:
- For the species labels, you likely have to create a summary data set.
- Use the {ggtext} geometries and theme elements to format the labels.
- Also, make use of the other components such as scales, complete themes, and theme customization.
→ Solution
Exercise 2
- Open the script
exercises/05_labels_ex2.qmd
(or the.rmd
). - Create the logo in
exercises/5-2-logo
with the image fileexercises/img/rstudioconf-washington-bg.png
for the skyline:
→ Solution