[Rd] opening graphics device with a given number

[Henrik Bengtsson]

See devSet() in R.utils, e.g.

> library("R.utils");
> graphics.off();
> devSet(6);
> devSet("myFigure");  # Also possible
> print(devList());
myFigure Device 6
       2        6
>

/Henrik

On Sat, Nov 13, 2010 at 2:44 AM, Petr Savicky <savicky at cs.cas.cz> wrote:
> I am preparing a script, which uses three graphical windows for different
> types of plots. Before each plot, the device can be chosen by dev.set(k)
> for k = 2, 3, 4. The function dev.set(k) does not create the required
> device, if it is not opened already. So, instead, i use dev.add(k)
> defined as
>
>  dev.add <- function(k)
>  {
>      stopifnot(k >= 2 && k <= 63)
>      while (all(dev.list() != k)) {
>          dev.new()
>      }
>      dev.set(k)
>  }
>
> If the device k was not opened, then all the devices with numbers
> smaller than k, which were not opened already, are created.
> Usually, i use an interval of the device numbers, but sometimes,
> it could be useful to open, say, device 4, even if device 3
> is not needed. Is there a way, how to open a device with a
> given number without opening devices with smaller numbers?
>
> Petr Savicky.
>
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