R help - Aug 2007 - runing .r file from C#

Hi,

 I know that the general subject "calling R from C" has been discused
but I
have been reading the manuals and also scouting the lists and I can not seam
to find
a working solution for my problem.
  I want to call a R script ( let's call it "test.r" ) from within
C# code.
  After reading about this topic I am trying to do this :

System.Diagnostics.Process proc = new System.Diagnostics.Process();
proc.StartInfo.FileName = "E:/R/R-2.5.1 /bin/Rterm.exe";
proc.StartInfo.Arguments = " <'test.r' --no-save";
proc.StartInfo.UseShellExecute = false;
proc.StartInfo.RedirectStandardOutput = false;
proc.Start();


bun when Rterm starts it shows parameter <test.r ignored

When I try to do the same from a command line shell it DOES work just fine :
" Rterm.exe <test.r --no-save"  runs the file without any problems.

 Do you have any idea how to make it not to ignore the input file? Or is
there other way to just execute a .r file from C# code?

     Thank you very much,
                        Alex

-- 
Alexandru Maruseac
BEST Bucharest
E-mail: alexandru.maruseac@BEST.eu.org
Tel:+40 0722 329 083
www.BEST.eu.org
www.BESTBc.pub.ro

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On Tue, 21 Aug 2007, Alex MD wrote:
> Hi,
>
> I know that the general subject "calling R from C" has been
discused but I
> have been reading the manuals and also scouting the lists and I can not
seam
> to find
> a working solution for my problem.
It's a C# issue.
>  I want to call a R script ( let's call it "test.r" ) from
within C# code.
>  After reading about this topic I am trying to do this :
>
> System.Diagnostics.Process proc = new System.Diagnostics.Process();
> proc.StartInfo.FileName = "E:/R/R-2.5.1 /bin/Rterm.exe";
> proc.StartInfo.Arguments = " <'test.r' --no-save";
> proc.StartInfo.UseShellExecute = false;
> proc.StartInfo.RedirectStandardOutput = false;
> proc.Start();
>
>
> bun when Rterm starts it shows parameter <test.r ignored
>
> When I try to do the same from a command line shell it DOES work just fine
:
> " Rterm.exe <test.r --no-save"  runs the file without any
problems.
>
> Do you have any idea how to make it not to ignore the input file? Or is
> there other way to just execute a .r file from C# code?
You need a shell for redirection (< > |) to work, and 'system'
commands in
Windows do not usually use one (as in C, C++, R, Perl): you seem to have 
turned off using a shell in C#.  However, I think you should be using 
RScript.exe, where this is not an issue.

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595