Desktop Survival Guide
by Graham Williams

Screen Devices

A new graphics device is created with any one of x11, windows, and quartz. Once a graphics device is opened, all further graphics commands relate to that device, until it is closed with the function. The function closes all devices.

> x11()
> plot(rnorm(50))
> x11()
> plot(rnorm(10))
null device

On screen devices you can sometimes print the plots directly from the right mouse button menu (depending on the operating system and the GUI). Once you have a plot drawn on a screen device you can always save the current plot to PDF with:

dev.print(pdf, file="rplot.pdf")

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