The way it should work IMHO is that one can write any of these (in analogy to awk/perl/etc.):
R -f myprog.R mydata.dat R -f myprog.R < mydata.dat cat mydata.dat | R -f myprog.R # or analogously on Windows R -e "...some.R.code... " mydata.dat R -e "...some.R.code... " < mydata.dat and there should be a simple way for myprog.R to read the input data that does not require that it know whether it was specified on the command line or redirected. On 9/26/06, Richard M. Heiberger <[EMAIL PROTECTED]> wrote: > I like this plan and have now played with the concept. I did the following > on Windows in cygwin. It would also work in Unix, and I think could be > tickled > to work on the standard MS cmd line in Windows. It would certainly work > on Windows with a Windows-native port of the basic unix utilities. > > echo 'options(echo=FALSE);cat(pi^2,"\n")' | Rterm --no-save > > This produces an output file, that normally shows up in the *shell* > buffer, but could be redirected. The obvious place to redirect it to is > awk with a script to filter out everything above the echo of the options() > line. > > The only change to R needed to remove the need for an awk script > is to suppress the display of the copyright message and startup > information. I suppose that could be done with a new > --suppress-startup-info argument to Rterm. > > The other optimizations that Jeffrey and Dirk have, such as > suppressing the loading of many of the standard packages, > would also need to be done. > > Very good work and concept. > > Rich > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.