I'm not able to replicate using the same setup on several computers, either
with R.app or R running in the terminal, so it's likely something highly
specific to your setup. I'd suggest reinstalling or upgrading R and see if the
problem goes away.
The clearer way to do this in R, in my opinion, is to use the wait=FALSE flag
in system(), which has the same effect as & directly in the shell.
Noah
On Mar 6, 2011, at Mar 6 10:29 AM , Dennis Fisher wrote:
> Colleagues
>
> I just encountered an odd problem with the system command; perhaps someone
> can provide some insight.
> At some point in the past (~ 6 months ago; I was using the latest version of
> R and Snow Leopard available at the time), the command:
> system("open -a /complete/path/to/app /complete/path/to/file &")
> ran successfully.
>
> I am using R 2.12.0 and OS X.6.6 and the command failed. To my surprise,
> removed the ampersand fixed the problem. I don't know if the problem lies
> with OS X or R's interaction with OS X. Does anyone have any insights into
> this?
>
> Dennis
>
>
> Dennis Fisher MD
> P < (The "P Less Than" Company)
> Phone: 1-866-PLessThan (1-866-753-7784)
> Fax: 1-866-PLessThan (1-866-753-7784)
> www.PLessThan.com
>
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