How to Add a ggplot2 Title & Subtitle with Different Size & Color in R (Example Code)

my_df <- data.frame(x = 1:5,            # Example data
                    y = c(2, 1, 4, 2, 3))

my_df <- data.frame(x = 1:5, # Example data y = c(2, 1, 4, 2, 3))

install.packages("ggplot2")               # Install & load ggplot2 package
library("ggplot2")

install.packages("ggplot2") # Install & load ggplot2 package library("ggplot2")

my_ggp <- ggplot(my_df, aes(x, y)) +    # ggplot2 plot with default titles
  geom_line() +
  labs(title = "This is the Title",
       subtitle = "This is the Subtitle")
my_ggp                                  # Draw plot

my_ggp <- ggplot(my_df, aes(x, y)) + # ggplot2 plot with default titles geom_line() + labs(title = "This is the Title", subtitle = "This is the Subtitle") my_ggp # Draw plot

my_ggp +                                # Change colors & size
  theme(plot.title = element_text(size = 30, color = "red"),
        plot.subtitle = element_text(size = 15, color = "green"))

my_ggp + # Change colors & size theme(plot.title = element_text(size = 30, color = "red"), plot.subtitle = element_text(size = 15, color = "green"))