Message-ID: <50FC699B.2040102@gmail.com>
Date: 2013-01-20T22:03:07Z
From: Duncan Murdoch
Subject: How to check if R.app is running?
In-Reply-To: <50FC66D2.2030508@berkeley.edu>
On 13-01-20 4:51 PM, Nick Matzke wrote:
> Hi, here's an obscure question someone can hopefully help with.
>
> I have some R code that uses stuff from parallel (now a part
> of the R core in 2.15 I believe), especially clusterApply.
> However, this seems to cause problems in R.app, and I've
> seen advice to not use these multicore functions, e.g. doMC,
> in R.app.
>
> So, I want to make this optional. How can have a program
> check whether or not it is running in R.app or regular R?
>
> Thanks so much for your help!!
> Nick
>
> PS: I saw this:
> http://stackoverflow.com/questions/2020790/r-script-determine-whether-the-script-is-run-in-the-gui-or-from-command-line
>
> Which says to use:
>
> interactive()
>
> ...but that doesn't work. Interactive R is fine (e.g.
> starting R from Mac Terminal), only R.app is not.
>
>
.Platform$GUI will be different in the two cases: "AQUA" for R.app and
something else in other cases. I don't know if that's a good test to
find out if clusterApply is safe.
Duncan Murdoch