Question

Let’s say I have a list of plots that I’ve created.

library(ggplot2)
plots <- list()
plots$a <- ggplot(cars, aes(speed, dist)) + geom_point()
plots$b <- ggplot(cars, aes(speed)) + geom_histogram()
plots$c <- ggplot(cars, aes(dist)) + geom_histogram()

Now, I would like to save all of these, labelling each with their respective names(plots) element.

lapply(plots, 
       function(x) { 
         ggsave(filename=paste(...,".jpeg",sep=""), plot=x)
         dev.off()
         }
       )

What would I replace “…” with such that in my working directory the plots were saved as:

a.jpeg
b.jpeg
c.jpeg

Answer 1

probably you need to pass the names of list:

lapply(names(plots), 
  function(x)ggsave(filename=paste(x,".jpeg",sep=""), plot=plots[[x]]))