Multiple plots using for loop

Question

I am trying to print out and save to ggplot2 object (with a proper name with may change for each element of p.vec) using for loops, any help will be appreciated, many thanks in advance.

 par(mfrow = c(2, 2))
    p.vec <- c("disp","mpg")
    for(i in p.vec){
    p <- ggplot(data = mtcars, aes(x = mpg, y= i)) +geom_jitter()
    print(p)
    #ggsave("plot.pdf")
    }

Ronak Shah · Accepted Answer · 2020-10-13 12:26:19Z

1

Try using lapply :

library(ggplot2)
p.vec <- c("disp","mpg")

lapply(p.vec, function(x) {
  p <- ggplot(data = mtcars, aes(x = mpg, y= .data[[x]])) +geom_jitter()
  ggsave(sprintf('plot_%s.jpg', x))
})

Instead of .data[[x]] you can also use any of the option from this answer.

answered Oct 13, 2020 at 12:26

Ronak Shah

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