Combining plots in ggplot2

Arranging multiple ggplot2 plots side by side in R using patchwork

We need to load the following R libraries:

library(ggplot2)
library(patchwork)
library(dplyr)

Create two plots:

p1 <- ggplot(iris, aes(x = Sepal.Length, y = Sepal.Width, color = Species)) +
  geom_point() +
  labs(title = "Sepal Length vs Sepal Width") +
  theme_minimal()

p2 <- ggplot(mtcars, aes(x = wt, y = mpg, color = factor(cyl))) +
  geom_point() +
  labs(title = "Weight vs MPG") +
  theme_minimal()

Now we can arrange the two plots side by side using the patchwork package:

p1 + p2

Figure 1: Side by side plots using patchwork

You can also customize the layout further, for example by adding a common title or adjusting the spacing:

(p1 + p2) +
  plot_layout(ncol = 2) +
  plot_annotation(title = "Side by Side Plots in ggplot2") +
  theme(plot.title = element_text(hjust = 0.5))

Figure 2: Common title

You can also position the plots one below the other:

p1 / p2

Figure 3: Top and bottom plots using patchwork