2010/9/20 Aditya Mahajan <adit...@umich.edu>:
> On Mon, 20 Sep 2010, Johan Sandblom wrote:

> Why are you using input output redirection
>
>      R .... < \Rfile\space > \Rfile.out
>
> rather than a simple
>
>     R .... \Rfile\space \Rfile.out

Originally, I think it was because it was the only way that worked on
both Windows and Linux, but lately it is because R CMD BATCH produces
produces a couple of lines of processing times at the end, which I do
not want.

> @Hans, mtxrun be completely silent when used to launch external programs and
> only give some output if --verbose is passed.

That would make more sense.

> BTW, there is a serious bug in the R module: each code chunck carries a
> state with it (--save --restore), but this state can depend on which chunck
> was changed.

Indeed. But I have learned to live with it.

> This "bug" can be avoided by doing some book keeping for the external state
> (saving the file to a different name and restoring it), or by not using
> --save and --restore.

Yes. But the book keeping gets a little complicated and ugly since it
needs to be done from within R (--save takes no arguments). Or
possibly all chunks after an altered chunk should be run.

Thanks for your comments, Johan

> Aditya
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-- 
Johan Sandblom, MD PhD
m +46735521477  Sweden
"What is wanted is not the will to believe, but the
will to find out, which is the exact opposite"
- Bertrand Russell
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