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25 Jan 2012 Initialize a plot that will be written directly to a file using pdf or png. Then create a plot using the usual functions in R. Finally, close the file using Hi all, I know how to use pdf() and dev.off() to produce and save a graph. However, when I put them in a function say myplot(x=1:20){ 12 Jan 2019 For example, to export ggplot2 graphs to a pdf file, the R code looks like print(myplot2) # Plot 2 ---> in the second page of the PDF dev.off() If you run pdf multiple times without running dev.off , you will save plots to the most recently opened file. However, you won't won't be able to open the previous (For example, a scatter plot with thousands of points may result in a very large vector file, but a smaller bitmap file.) pdf("plots.pdf") plot() plot() dev.off(). To save a plot as jpeg image we would perform the following steps. Please note that we need to call the function dev.off() after all the plotting, to save the file andPDF, pdf, Best choice with pdflatex; easily resizable. Postscript When you're done with your plotting commands, enter the dev.off() command. This is very dev.off(), This is not an argument to pdf() and jpeg() . You just need to execute this code after creating the plot to finish creating the image file (see examples). This package is a wrapper for the pdf function. A temporary file is created by pdf , acting as normal graphical device. After plotting, when dev.off is called, the file This is a common problem. You need to use print() inside a for loop. pdf("myfile.pdf") for (i in 1:2) { ggplot(mpg, aes(x=cty, y=hwy))+geom_point() } dev.off()