Dear Peter, Thank you very much for taking a look at this problem and for confirming that the problem is general to tcltk.
I coincidentally just send a message to the list with the same conclusion -- that the problem occurs in R.app but not in a terminal window. Best, John On Wed, 20 Nov 2013 21:17:40 +0100 peter dalgaard <pda...@gmail.com> wrote: > Notes inlined below, > > -pd > > > On 20 Nov 2013, at 18:19 , John Fox <j...@mcmaster.ca> wrote: > > > Dear Jonathan et al, > > > > First, thank you to all who responded. As I said, I haven't noticed this > > problem myself, but I'll try again on my Mac later today when I have some > > time and see whether I can reproduce it. I suspect that this is a > > tcltk-related issue, not specific to the Rcmdr, but I don't know that for > > sure. > > > > Affirmative. You can get similar behaviour from library(tcltk); demo(tkfaq) > in R.app. It doesnt seem to be happening with R in a Terminal window. > > You can snap out of it temporarily by switching to the R console and back. > > So a working hypothesis is that something is "backgrounding" the R process > after a while, if it doesnt have input focus. Since the tcltk event loop > runs off the keyboard loop, we have the trouble. My take is that someone > needs to take a look at how R.app handles keyboard input, in particular the > timeout aspect. > > > > In the meantime, here are two things to try: > > > > (1) Reijo Sund suggested trying to run R and the Rcmdr from the command > > line (i.e., in a terminal window), to see whether the problem manifests > > itself there. The Rcmdr doesn't need R.app. > > > > (2) It's possible that the slowdown is caused by the way that the Rcmdr > > handles R Markdown documents. The overhead gets greater as the session > > proceeds. To test this possibility, you could suppress the R Markdown tab > > (via the Rcmdr Tools -> Options menu, Output tab -- uncheck the box for R > > Markdown) and see whether the problem disappears. > > > > Negative. I see the issue even with an older Rcmdr version without the > Markdown stuff. > > > Please let me know what happens. > > -- > Peter Dalgaard, Professor, > Center for Statistics, Copenhagen Business School > Solbjerg Plads 3, 2000 Frederiksberg, Denmark > Phone: (+45)38153501 > Email: pd....@cbs.dk Priv: pda...@gmail.com > > > > > > > > ------------------------------------------------ John Fox McMaster University Hamilton, Ontario, Canada http://socserv.mcmaster.ca/jfox/ _______________________________________________ R-SIG-Mac mailing list R-SIG-Mac@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-mac
