[Rd] Controlling stdin and stdout in an embedded R instance

From: Mike Sonsini <msonsini_at_harmonia.com>
Date: Thu, 16 Jun 2011 18:47:43 -0400


Hello,

I am very new to R but my question is with respect to the C API for working with an embedded R console. I have been able to start and stop an embedded R console from within a C program as well as use the API to execute commands in it. I am seeking a mechanism to individually send native R commands to an embedded console and then consume the output of these commands. Specifically, I cannot send a set of commands to the embedded console and then consume all of the output after the execution completes. I have unsuccessfully attempted to assign values to the ptr_R_ReadConsole and ptr_R_WriteConsole function pointers defined in Rinterface.h but do not know if this is a valid approach. I am working in Ubuntu 10.04 and thus the Windows example at the following address is not applicable.

http://cran.r-project.org/doc/manuals/R-exts.html#Calling-R_002edll-directly

Does anyone on this list have experience or an example of communicating with an embedded R console using native R commands and consuming the output one command at a time in a "Unix-alike" environment?

Thank you,
Mike Sonsini



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