On 13-07-13 1:33 PM, Simon Zehnder wrote:
Dear R-Users,
I am writing a package using S4 classes. In the generic method "plot" I want to
set the title for the plotting window as I will have several windows and window titles
help the users to distinguish the graphics without putting a title into the plot itself
(this can be done by users whenever they want)
So I created a helper function .setDeviceTitle which I called after the plot
has been done:
".setDeviceTitle" <- function(title = "title", dev = dev.cur()) {
dev <- names(dev)[1]
## check for OS ##
if (dev == "windows") {
windows(title = title)
} else if (dev == "X11") {
X11(title = title)
} else {
quartz(title = title)
}
}
The result is a new device with the title in addition to the old. Is it
possible to give a window a title after the plot has been done? If not: Before
I plot the device I cannot know what device it will be, so I thought about a
check via capabilities():
if (any(names(capabilities()) == "X11")) {
X11(title = title)
}
else if (any(names(capabilities)) == "windows") {
windows(title = title)
} else {
quartz(title = title)
}
I want to have a safe method, which works on each OS R can run. How would you
solve the problem?
Use dev.new() rather than picking a particular device. If all the
possible devices support the "title" argument, then
dev.new(title=title)
will be fine. If you might need more customization (or want to protect
against a user who chooses a device that doesn't have "title" as an
argument), use getOption("device") to examine the call that will be used.
Duncan Murdoch
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