Multi-Panel Figure Assembly

patchwork Basics

library(patchwork)

p1 <- ggplot(df, aes(x, y)) + geom_point()
p2 <- ggplot(df, aes(group, value)) + geom_boxplot()
p3 <- ggplot(df, aes(x)) + geom_histogram()

# Horizontal
p1 + p2 + p3

# Vertical
p1 / p2 / p3