Graphics Devices

Closing current graphics device:

> dev.off()

List of graphics devices:

> dev.list()

Closing all current graphics devices:

> graphics.off()

Let’s see what happens when we create our first plot:

> plot(faithful)
> dev.list()
RStudioGD       png
        2         3
> dev.list()
RStudioGD       png
        2         3

Identifying current graphics device:

> dev.cur()
RStudioGD
        2

Identifying the next graphics device:

> dev.next()
png
  3
> dev.next(1)
RStudioGD
        2
> dev.next(2)
png
  3
> dev.next(3)
RStudioGD
        2
> dev.next(4)
RStudioGD
        2

Previous graphics device:

> dev.prev()
png
  3
> dev.prev(3)
RStudioGD
        2

Picking the RStudio plot device:

> dev.list()['RStudioGD']
RStudioGD
        2

Closing the current graphics device only if it is present:

if(!is.null(dev.list())) dev.off()

We should never attempt to close device no 1 which is the null device. If you have closed all devices then:

> dev.cur()
null device
          1

Here is a way to close current device if it is not 1:

> while (dev.cur()>1) dev.off()