R help - Nov 2006 - calling R from cmd line, loading in data sets on the call

Hi -

 

I have read the archives on R cmd and passing parameters, and I guess I
am not totally clear if that solved this problem ...

 

I would like to call an R script from the command line, and in the
process pass in data sets and parameters ... right now, I manually
specify the files to be read in as the data sets for the script, and
then it processes, but I need to be able to automate this action from
the cmd line. 

 

Rcmd myprogram.R  is clearly documented as unable to take parameters
passed to it ...

 

 

I am on Windows, R 2.3.1 

 

 

 

Thanks

 

Matt

 

 

 

 


	[[alternative HTML version deleted]]

Matt Anthony wrote:
> Rcmd myprogram.R  is clearly documented as unable to take parameters
> passed to it ...
> 
  It can take parameters from the environment though...


  H:\> set METHOD=loglik
  H:\> "c:\Program Files\R\R-2.2.1\bin\R"

blah blah

  > Sys.getenv("METHOD")
    METHOD
  "loglik"
  >

Barry

I know an answer for Unix that can perhaps you can translate to DOS.  
If you pass a file of R statements to 'R' on the command line it will  
run them. In Unix, the '|' (pipe) symbol sends text to a program as  
though it came from a file, thus:
	echo "x<-2; 2*x" | R --vanilla --slave
yields
	[1] 4

Or you could put "x<-2; 2*x" in a file called test.R and run:
	R --vanilla --slave < test.R

I use this to interpret user commands from labsynch wiki pages on the  
server ( I learned this from Alfredo Pontillo's R-php). You can run  
any R command, including loading other files and libraries. I use it  
to pass files and set the working directory.

John