I ran into the same problem when trying to launch R from MS-Access. The solution was to create a DOS batch file and execute it through VBA with the shell command. The batch file contains just one line:
C:\pathname\r\bin\rterm.exe --no-save < C:\pathname\rcode.r HTH Duncan Murdoch-2 wrote: > > On 08/08/2008 7:00 AM, Dobedani wrote: >> Dear all, >> >> I'm trying to invoke R from an application which I'm developing. I >> have indications that the problem is specific to R. I'm able to e.g. >> invoke a Python script in the same way with success, but R is giving >> me problems. Last year a guy with nickname vital101 posted a message >> on the Java forums website about invoking R from Java. The link to >> that thread is: >> http://www.java-forums.org/advanced-java/3433-external-program-execution-problems.html#post6970 >> >> Unfortunately, he did not report back whether he found a solution at >> the time. As I said, I believe the problems he encountered were >> specific to R. What he was doing from Java, I'm now trying to do from >> C#. And I'm getting exactly the same warnings / errors back from R as >> he was getting: >> ARGUMENT '<' __ignored__ >> ARGUMENT 'test.r' __ignored__ >> >> FYI: I'm using Windows XP. If I enter the following behind the command >> prompt: >> C:\Progra~1\R\R-2.7.1\bin\Rterm.exe --slave < test.r >> then my script test.r is dealt with correctly, but if I use DotNet >> classes Process and StartInfo from the System.Diagnostics namespace, >> things go wrong :-( >> >> Does anyone understand what is going wrong here? Pls let me know >> something. TIA > > This is not a problem with R. When you enter a command at the command > line, it is the shell (typically CMD.EXE in Windows) that handles the > input redirection "<". R never sees that, and so R has no code to > handle it. > > When you are invoking R directly, it's up to you to handle the input > redirection, since you're not using the shell. I've got no idea how to > do that in C#. > > However, R does allow you to use the -f (or --file=) command line option > to take input from a file, and that's likely to do what you want. > > Duncan Murdoch > > ______________________________________________ > R-help@r-project.org 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. > > -- View this message in context: http://www.nabble.com/Invoking-R-from-application-tp18890219p18895118.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ R-help@r-project.org 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.
