On Jan 11, 2010, at 9:28 AM, Michael Friendly wrote:
Env: Win XP, R 2.9.2]
It's a minor annoyance, but I find that after I run example(), the
console state of prompting to press Enter for
each new graph remains as it is under example. It's more annoying
that it seems difficult to turn this behavior
off!
I have had the same annoyance when I interrupted a sequence of
examples with ctrl-C and this prevented the restoration of the initial
state. You could try:
options(device.ask.default = FALSE) # and / or
grDevices::devAskNewPage(ask=FALSE)
Changing the first one on my machine did nothing, but the second one
was effective,
--
David.
In a fresh session:
> getOption("example.ask")
[1] "default"
Run an example:
> example(plot)
plot> require(stats)
plot> plot(cars)
Waiting to confirm page change...
...
> getOption("example.ask")
[1] "default"
# do another plot:
> plot(sin, -pi, 2*pi)
Waiting to confirm page change...
>
# reset option to FALSE
> options("example.ask"=FALSE)
> plot(sin, -pi, 2*pi)
Waiting to confirm page change...
# try resetting devAskNewPage
> devAskNewPage(ask = NULL)
[1] TRUE
> plot(sin, -pi, 2*pi)
Waiting to confirm page change...
>
There does seem to be code in example to reset this state on exit,
and I'm baffled why it doesn't actually
do it
...
if (ask == "default")
ask <- echo && grDevices::dev.interactive(orNone = TRUE)
if (ask) {
if (.Device != "null device") {
oldask <- grDevices::devAskNewPage(ask = TRUE)
if (!oldask)
on.exit(grDevices::devAskNewPage(oldask), add = TRUE)
}
op <- options(device.ask.default = TRUE)
on.exit(options(op), add = TRUE)
}
...
So, how can I restore the previous state of plotting w/out prompting?
--
Michael Friendly Email: frien...@yorku.ca Professor, Psychology
Dept.
York University Voice: 416 736-5115 x66249 Fax: 416 736-5814
4700 Keele Street http://www.math.yorku.ca/SCS/friendly.html
Toronto, ONT M3J 1P3 CANADA
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David Winsemius, MD
Heritage Laboratories
West Hartford, CT
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and provide commented, minimal, self-contained, reproducible code.
