dev.control(displaylist) dev.copy(device, ..., which=dev.next()) dev.print(device=postscript, ...)
device
|
A device function (e.g., x11 , postscript ,
...)
|
...
| Arguments to the device function |
which
| A device number specifying the device to copy to |
displaylist
| A character string |
dev.copy
copies the graphics contents of the current device to
the device specified by which
or to a new device which has been
created by the function specified by device
(it is an error to
specify both which
and device
).
dev.print
copies the graphics contents of the current device to
a new device which has been created by the function specified by
device
and then shuts the new device. This is most useful for
producing a postscript copy from an on-screen device.
dev.control
allows the user to control the recording of
graphics operations in a device. If displaylist
is "inhibit"
then recording is turned off.
dev.copy
returns the name and number of the device which has
been copied to.
dev.print
returns the name and number of the device which has
been copied from.
dev.copy
and dev.print
copy graphics
contents by copying the display list from one device to another device.
Also, automatic redrawing of graphics contents following the resizing of
a device depends on the contents of the display list.
After the command dev.control("inhibit")
,
graphics operations are not recorded in
the display list so that
dev.copy
and dev.print
will not copy anything and the
contents of a device will not be redrawn automatically if the device is
resized.
The recording of graphics operations is relatively expensive in terms of
memory so the command dev.control("inhibit")
can be useful if
memory usage is an issue.
dev.cur
and other dev.xxx
functionsif (interactive()) { x11() plot(rnorm(10), main="Plot 1") dev.copy(device=x11) mtext("Copy 1", 3) dev.print(width=6, height=6, horizontal=F) dev.off(dev.prev()) dev.off() }