[R] Re-sent to correct list: passing parameters

[Peter Dalgaard BSA]

Thomas Lumley <tlumley at u.washington.edu> writes:

> On Fri, 9 Nov 2001, Shravan Vasishth wrote:
> 
> > Hi,
> >
> > My apologies for sending this message earlier to the wrong list (next
> > time I'll wait till I'm fully awake).
> >
> > I'm a new R user.  I want to do the following:
> >
> > I want to pass a filename to R repeatedly (about 400 times) in order to
> > do a repetitive task (calculating regressions).
> >
> <snip>
> > It works, but this is a really ugly hack, so my question is: is there a
> > better way to do this? For example, is there some way to pass a
> > filehandle as a parameter to R? From reading the manuals and old news
> > posts and responses, it seems the answer is no. I'm thinking of a
> > command like
> >
> > R --silent -slave < source.R  $f  >> outfile.test
> >
> > where $f will be used as the variable for the file to be converted to an
> >
> > object ("foo" in my toy example above).
> 
> THe commandArgs() function reports the arguments that R was called with.

Also, things can be made somewhat cleaner by utilizing the fact that 
substitution takes place in here scripts, e.g.

#!/bin/sh
for i in *.c ; do R --vanilla --quiet << EOF
print("$i")
EOF

However, the question is whether it wouldn't be better to have loop
coded internally to R.

-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
 (*) \(*) -- University of Copenhagen   Denmark      Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk)             FAX: (+45) 35327907
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