[R] How to check if R.app is running?

Nick Matzke matzke at berkeley.edu
Mon Jan 21 01:32:21 CET 2013

Probably good enough, thanks!

On 1/20/13 2:03 PM, Duncan Murdoch wrote:
> 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

Nicholas J. Matzke
Ph.D. Candidate, Graduate Student Researcher

Huelsenbeck Lab
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