Hello,
I work for a company in which a number of employees use R. Many of them like to
run executables via the system function in such a way that the output of that
executable is displayed in a separate window. To give an example of the
behavior they require, the following command can be run in R GUI:
system("cmd",invisible=FALSE,show.output.on.console=FALSE)
The result is that a command prompt opens up and can be used interactively
until it is closed. We have never had a problem with this command running R on
Windows XP machines.
Recently a number of us have switched to PCs running Windows 7. Under this
operating system the above command often, if not always, fails to open a
window. Some people can successfully run the command in one R session but then
fail to get a window if a second R session is started. Others cannot get a
window to open at all. We've tested the command with R 2.12.1, 2.12.1 patched,
2.12.2 and 2.12.2 patched (all in both 32 and 64 bit). All of these exhibit the
same problem.
I raised the issue as a bug
(https://bugs.r-project.org/bugzilla3/show_bug.cgi?id=14516), but this was
promptly closed as being "not reproducible". Since we are having issues running
the above command on all of our windows 7 PCs but none of our windows XP PCs,
and since whoever closed the bug clearly had no issues running the command on
his or her Windows 7 PC, I'm not really sure what to do next in terms of trying
to resolve the problem.
Can anyone shed any light on this issue? Is anyone able to reproduce it (only
takes 30 seconds, just copy the above line into RGui on Windows 7 and confirm
whether a command prompt opens; then, with the first session still open, try
the same in a second RGui window)?
Any help or feedback would be appreciated,
Cheers,
Ralph
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