Thanks for your help.
Maybe I was not clear in my question. 
Let say I have a R script , myscript.R which produce some file "mydata.Rdata" and saves them in /inst folder.
My question is where to I put my script so that it will run when I build the package using "R CMD build" ? 
I want to include "mydata.RData" in my package and I want it to be updated every time i build the package.

I appreciate your help anyway.


-Johan

----- Original Message ----
From: Adaikalavan Ramasamy <ramasamy@cancer.org.uk>
To: johan Faux <johanfaux@yahoo.com>
Cc: r-help@stat.math.ethz.ch
Sent: Tuesday, March 20, 2007 12:10:21 PM
Subject: Re: [R] run a script during R CMD build

Yes, one way is to use commandArgs in the R script. So say your R script 
is as follows

  n   <- as.character(commandArgs()[3])
  fn  <- as.character(commandArgs()[4])

  mat <- matrix( rnorm( n*n ), nc=n )
  write.table( mat, filenames=fn, sep="\t", quote=FALSE )



Then you execute the commands from command line as

   R --no-save < script 100 out.txt


This will run the R commands and output them to "out.txt".



johan Faux wrote:
> I would like R CMD build to run some R code which does some stuff and save the result as a file in /inst/docs folder. 
> Is there any way of doing this.
> 
> Thank you.
> Johan
> 
> 
> 
> 
>  
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