[R] R with command line

[Duncan Murdoch]

On 28/04/2010 10:03 AM, Duke wrote:
> On 4/28/10 9:53 AM, Duncan Murdoch wrote:
> > On 28/04/2010 9:38 AM, Duke wrote:
> >> On 4/27/10 8:04 PM, Duncan Murdoch wrote:
> >> > On 27/04/2010 6:15 PM, Duke wrote:
> >> >> Hi all,
> >> >>
> >> >> I am testing R by trying R on command line (ie without opening R 
> >> >> console) on a Mac Pro with 10.6. So I created a file plot.R:
> >> >>
> >> >> x11(width=5,height=3.5)
> >> >> plot(1:10,1:10)
> >> >>
> >> >> So I have two questions below (please forgive me if the questions 
> >> >> have been asked already)
> >> >>
> >> >> 1. What is the different between *R CMD BATCH infile.R* and *R >> 
> >> --vanilla --slave < infile.R*?
> >> >
> >> > Those are quite similar.  A couple of differences are:
> >> >
> >> > --vanilla changes the startup options.  You'll use fewer of the > 
> >> profile etc. files.  See ?Startup for the details.
> >> >
> >> >  R CMD BATCH sets up an output file to collect the output.  It 
> >> would > likely be called infile.Rout.  It would also have a 
> >> proc.time() call > added at the end.
> >>
> >> Got it now. Thanks Duncan.
> >>
> >> >
> >> >> 2. When I ran plot.R with one of the above methods, the plot 
> >> showed >> up for like a second and disappear. What should I do to 
> >> keep the plot >> there until the user closes it?
> >> >
> >> > If you have a user involved, you should be running interactively, 
> >> not > in batch mode. You can automatically run your infile.R ahead of 
> >> > starting the session by setting an environment variable named > 
> >> R_PROFILE_USER pointing to that file; e.g.
> >> >
> >> > R R_PROFILE_USER=infile.R
> >> >
> >> > (which sets the variable temporarily, only for that session).
> >>
> >> Well, it seems to be beyond my understanding. Could you please 
> >> elaborate a little bit more?
> >
> > Just type the line I gave you.  I don't really see how to elaborate.
>
> I just did it, and it said it ignored the arg:
>
> $ R R_PROFILE_USER=try.R
> ARGUMENT 'R_PROFILE_USER=try.R' __ignored__
>
>
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> What am I doing wrong?
What platform are you on?  What I gave works on Windows.  If you're on a 
Unix-like platform in a bash shell, then you can define environment 
variables before the command:

R_PROFILE_USER=try.R R

Duncan Murdoch