Control Multiple Devices

Description

These functions provide control over multiple graphics devices.

Only one device is the active device. This is the device in which all graphics operations occur.

Devices are associated with a name (e.g., "X11" or "postscript") and a number; the "null device" is always device 1.

dev.off shuts down the specified (by default the current) device. graphics.off() shuts down all open graphics devices.

dev.set makes the specified device the active device.

A list of device names is stored in .Devices. The name of the active device is stored in .Device.

Usage

dev.cur()
dev.list()
dev.next(which = dev.cur())
dev.prev(which = dev.cur())
dev.off(which = dev.cur())
dev.set(which = dev.next())
graphics.off()

Arguments

Value

dev.cur returns the number and name of the active device.

dev.list returns the numbers and names of all devices.

dev.next returns the number and name of the next device in the list of devices.

dev.prev returns the number and name of the previous device in the list of devices.

dev.off returns the name and number of the new active device (after the specified device has been shut down).

dev.set returns the name and number of the new active device.

See Also

Devices, such as postscript, etc; graphics.off for closing all devices; layout and its links for setting up plotting regions on the current device.

Examples

x11()
plot(1:10)
x11()
plot(rnorm(10))
dev.set(dev.prev())
abline(0,1)# through the 1:10 points
dev.set(dev.next())
abline(h=0, col="gray")# for the residual plot
dev.set(dev.prev())
dev.off(); dev.off()#- close the two X devices