[R] Named pipe connections and stdout

[Mark Myatt]

All,

I am trying to use a named pipe to steer R from an external application.
Following the examples in RNEWS 1:1, I have created a simple listener:

        zz <- fifo("TESTFIFO", "r")
        repeat
  
         {
         a <- readLines(zz)
         if(length(a) != 0)
           {
           e <- try(eval(parse(text = a)))
           if (inherits(e, "try-error"))
             {
             # error handling code here
             cat("Error", "\n")
      
             }
           }
        }



I tested this by steering R from a simple console (e.g. using something
like:

        echo "<r-command> > TESTFIFO

This works OK but where has stdout gone?

Mark


--
Mark Myatt


-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
Send "info", "help", or "[un]subscribe"
(in the "body", not the subject !)  To: r-help-request at stat.math.ethz.ch
_._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._