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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