Overview

Teaching: 5 min
Exercises: 5 min

Questions

• What makes up a publication quality figure?

• What customization features are in ggplot2?

Objectives

• To generate a publication quality figure using ggplot2

ggplot2 customization for publication quality figures

• labs()
• theme()
• guide_legend()

Line Histogram Fill-in Challenge Continued

Fill in the missing pieces of the following code to generate a publication quality line histogram.

ggplot(________) +
  ________ +
  labs(________, y = "Count") +
  theme_classic(base_size = 24, base_family = ________) +
  theme(axis.title = element_text(size = 36))

Output Solution

Code Solution

ggplot(Africa, aes(log10(pop_2007), ..count..)) +
  geom_density() +
  labs(x = "Log10( 2007 Population )", y = "Count") +
  theme_classic(base_size = 24, base_family = "Helvetica") +
  theme(axis.title = element_text(size = 36))

Key Points

• Publication quality figures stand alone to address a scientific question.

• Publication quality figures include clear headings, labels, and symbols.

• Publication quality figures are often accompanied by a descriptive caption.

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