Dear R-helpers,
I've just started playing with getGraphicsEvent() in R, and was wondering if
there is a simple way to stop this function waiting for input after a
pre-defined time, instead of relying either on a non-NULL value from one of the
event handlers or for a user-interrupt for it to halt (as per the R manual).
The only way that I've thought of to make this work is using setTimeLimit to
kill the function after a set time - here's a (messy) example:
setTimeLimit(cpu = 1)
plot(0, 0)
eventEnv <- getGraphicsEventEnv()
setGraphicsEventHandlers(prompt = 'Test')
while(TRUE)
{
err <- try(q <- getGraphicsEvent(), silent=TRUE)
print(err)
}
# Not run
setTimeLimit(cpu = Inf)
but setTimeLimit doesn't seem to kill getGraphicsEvent() properly, as running
this code just ends up with the repeated returned error of "Error in
getGraphicsEvent(): recursive use of getGraphicsEvent not supported" instead of
the intended "Error: reached CPU time limit" every second.
Is there a way to get around this problem, or a different method to make this
work? Or should I quit dabbling in things beyond my ken?
Thanks,
Nick
______________________________________________
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
