CODEWITHSUNDEEP
rggplot2
Stata_user
Stata_user

Reputation: 564

Saving (and opening up) a list of png plots

I am trying to save a list of plots with a .png extentions. I can save them individually as a loop.

a <- data.frame(x=sample(10))
b <- data.frame(x=sample(10))
c <- data.frame(x=sample(10))

data<-list()
data[[1]] <- a
data[[2]] <- b
data[[3]] <- c


for(i in 1:3)
{
  temp_plot <- ggplot(data[[i]]) + 
    theme_bw() +
    geom_histogram(aes(x=x))
  
  ggsave(temp_plot, file=paste0("plot_", i,".png"), width = 14, height = 10, units = "cm") 
}

I have 2 questions:

  1. Can I save them as a list instead?
  2. How do I open them up as a list?

Thank you.

Upvotes: 1

Views: 326

Answers (1)

Konrad Rudolph
Konrad Rudolph

Reputation: 546213

You can save them in a list, yes — for example, using lapply:

plots = lapply(data, \(x) ggplot(x) + theme_bw() + geom_histogram(aes(x = x)))

(pre R 4.1.0, you need to replace \(x) with function (x).)

By “open” I assume you mean how to plot them? Well, using plot:

plot(plots[[2L]])

… or implicitly:

plots[[2L]]

Upvotes: 2

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