This tutorial shows how to add title to a ggplot. The function labs() is used.
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GGPlot2 Essentials for Great Data Visualization in RPrerequisites
Load required packages and set the theme function theme_minimal() as the default theme:
library(ggplot2) # For data visualization
theme_set(theme_minimal())Add title, subtitle and caption
# Default plot
library(ggplot2)
p <- ggplot(ToothGrowth, aes(x = factor(dose), y = len)) +
geom_boxplot()
print(p)
# Add titles
p <- p + labs(title = "Effect of Vitamin C on Tooth Growth",
subtitle = "Plot of length by dose",
caption = "Data source: ToothGrowth")
p
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