[R] non-interactive R usage...

[Warnes, Gregory R]

There are a number of ways of using R non-interactively.  The simplest
method is just to put your R commands in a file, say 'myscript.R' and do 

(Under Unix/Linux:)

   R --no-save < myscript.R > myscript.out

(Under MS-Windows)

   Rterm < myscript.R > myscript.out


This will run R, feeding it the commands in 'myscript.R' and send the output
to 'myscript.out'. 

Note that if you want graphics saved to a file that you should explicitly
open (and then close!) the desired device.

-Greg


 >  -----Original Message-----
 >  From: Chris Milkosky [mailto:c.milkosky at xpedite.com]
 >  Sent: Friday, October 05, 2001 9:24 AM
 >  To: r-mailing-list
 >  Subject: [R] non-interactive R usage...
 >  
 >  
 >  <Newbie alert> Hello all! </Newbie alert>   =)
 >  
 >  Hi all,
 >  
 >  First of all, I'm new to R and I'm REALLY REALLY impressed 
 >  by it.  It's an asset to the open source community.  I 
 >  can't begin to say
 >  how glad I am to have stumbled across it in 
 >  freshmeat.net...  Kudos to the developers - you've done a great job.
 >  
 >  OK - my question may be answered by looking through 
 >  documentation (I did RTFM), but I haven't noticed anything 
 >  yet.  I think I must
 >  just be missing something though.
 >  
 >  Does R give you the capability to run a script (read as 
 >  non-interactive) that would perform a statistical task, and 
 >  then send output
 >  to a file?  For example: read a set of data from a file, 
 >  generate a JPEG _file_ containing a plot of the data (with 
 >  some specific
 >  stat calcs plotted of course), and then exit?
 >  
 >  I do capacity planning and would like to be able to have 
 >  JPEG plots of real time statistical data appear on web pages, so I'm
 >  thinking that a CGI can be executed that starts R up, 
 >  generates a plot, and writes it to a file.  We currently 
 >  use gnuplot, but with
 >  all of the statistical needs we have, it is turning out to 
 >  be less flexible than we had hoped.
 >  
 >  Has this been done before?  Could it be?  If so, can we 
 >  pass command line parameters to our R scripts somehow?
 >  
 >  Thanks,
 >  
 >  Chris
 >  
 >  
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