On 16 June 2011 at 18:47, Mike Sonsini wrote: | 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?
Let me see if I understood this correctly: - you have managed to embed R in your own application - you now want to control the embedded R instance and for the latter you want to use stdin and stdout? Why not use R commands and consuming R output? Examples are e.g. - littler (available in Ubuntu) which sends R commands line by line to R; implemented in plain C. Commands can come from the command-line, from a script or from stdin: R still sees them line by line in REPL fashion. - RInside which builds on top of the littler experience and the Rcpp API (Rcpp is also in Ubuntu) to embed R via a much nicer C++ abstraction which, coupled with Rcpp, gives you real easy communication via full blown R objects accessible from C++. There are well over a dozen examples in the RInside sources Hope this helps, Dirk -- Gauss once played himself in a zero-sum game and won $50. -- #11 at http://www.gaussfacts.com ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel