On 25/07/2010 10:03 AM, (Ted Harding) wrote:
On 25-Jul-10 13:22:11, Sébastien Bihorel wrote:
Dear R-users,
Does anybody know a good way to create and use several graphical
devices at the same time in interactive mode? Ideally, I'd like
to open 2 to 3 devices and assign names to them. This way, I could
make any addition/modification/update to a particular device using
its name.
I did not see anything like a name argument in ?X11. Is there an
alternative?
Thanks in advance for your feeback.
Sebastien
You can certainly do this "by hand". The basic R terminal is device
number 1. If you do X11() (or invoke it implicitly by using a 'plot'
command) this will be device number 2. With just this one open, any
'plot' (or plot-related) commands will re-use it.
However, having opened device #2, you can do X11() again and get a
second graphics device which will be number 3. And so on, for as many
additional devices as you like.
By default, the device that the results of any 'plot' command are
sent to will be the most recently opened one. However, you can select
the device using the command dev.set(n) where n ( = 2,3,... ) is the
device you want to use. The device which is "active" will be shown
by the word "(ACTIVE)" attached to its display. All other devices
will show "(inactive)".
You could "name" your devices by indexing a vector (2:n) by names.
Try the following, Starting with no graphics devices open:
X11() # dev 2
X11() # dev 3
X11() # dev 4 ## This one is currently active
That's the right idea, but I wouldn't count on the numbers coming out 2,
3, 4: what if another device was already opened? Better to use
dev.cur() just after you open a new device to find out what its number
was. So do something like
X11()
plotA <- dev.cur()
X11()
plotB <- dev.cur()
X11()
plotC <- dev.cur()
dev.set(plotA) # first one is active
etc.
Duncan Murdoch
## Arange these so that you can see all their top bars
devN <- c(plotA=2,plotB=3,plotC=4)
dev.set(devN["plotA"]) # dev 2 is active
dev.set(devN["plotC"]) # dev 4 is active
dev.set(devN["plotB"]) # dev 3 is active
dev.set(devN["plotA"]) # dev 2 is active
dev.set(devN["plotC"]) # dev 4 is active
Hoping this helps,
Ted.
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E-Mail: (Ted Harding) <ted.hard...@manchester.ac.uk>
Fax-to-email: +44 (0)870 094 0861
Date: 25-Jul-10 Time: 15:03:14
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