r - how to change the title name of ggplot in a loop?

Question

This question already has an answer here: question from:https://stackoverflow.com/questions/65836637/how-to-change-the-title-name-of-ggplot-in-a-loop

Answer 1

Try this:

library(tidyverse)

# create a list with a specific length 
plot_lst <- vector("list", length = 8)

for (i in 1:8) {
  g <- ggplot(data = mtcars, aes(x = hp, y = wt)) +
    geom_point()+ggtitle(paste0("plot",i))
  plot_lst[[i]] <- g
}

# Combine all plots
cowplot::plot_grid(plotlist = plot_lst, nrow = 4)

Output: