similar to: Emulating a REPL in frontends

Along with getting pqR to work on Windows, I've also been testing it in the context of embedded R, and in the process have found some problems with the examples given of embedded R use. One problem can be seen in R_ReplDLLinit, in src/main/main.c: void R_ReplDLLinit(void) { SETJMP(R_Toplevel.cjmpbuf); R_GlobalContext = R_ToplevelContext = R_SessionContext = &R_Toplevel;

While doing some embedded programming and trying to figure out how to generate a hand coded SEXP equivalent of the line "t.test(x,conf.level=(1-p))$conf.int[2]" I had an idea for an addition to the embedded API. There are a number of hidden or static parse functions (R_ParseBuffer, R_Parse1Buffer, etc.) which take an IoBuffer* and returns a parsed tree. If one or more of these

Dear R developers, i've got a question concerning an embedded R instance. I called the initialization routines as seen in the "writing extensions" guide (Rf_initialize, setup_Rmainloop and R_ReplDLLinit). I also changed the function callback pointer of readconsole and writeconsoleex to my local functions. when i call mainloop there is no problem and the commands are evaluated

Hello R developers, Platform: Windows 2000. Compiler: GNU GCC - 2.95.2 (CRTDLL) I have a C function for evaluating commands using eval(SEXP,SEXP) which is included in a personal make of R.dll. (Similiar to R_Proxy_evaluate() in rproxy_impl.c) Using SETJMP to catch errors works but there is a problem. For example, the following code: if (SETJMP(R_ToplevelContext->cjmpbuf)) //

Dear All, I tried to write a C++ program that uses R internals and I encounter "undefined reference" error when linking to libR.so. Here is an small example of the program test.cpp: extern "C" { #include <config.h> #include <IOStuff.h> int main(int argc, char** argv) { R_IoBufferInit(&R_ConsoleIob); return 0; } } I built it using: g++ -o test

I have some problems with the rtest.c example under gnuwin32\front-ends I am able to build it and it runs without problems. But when I give it a command that isn't defined it crashes. This only happens when I build it in then complicate case where it uses R_ReplDLLdo1(). Any help would be appreciated. Ps. Sorry my poor English

? Sun, 23 Apr 2023 13:33:16 -0400 Laurent Gautier <lgautier at gmail.com> ?????: > When tracing what happens during an error I found that > verrorcall_dflt() in src/main/errors.c calls PrintWarnings(). That > function is not part of R's C-API though. I've tried reading the source code and came to a similar conclusion. PrintWarnings() is required for warnings() to work

Forwarded to R-bugs to log this. It may or may not be a bug, but it is a desirable enhancement, if a tricky one. Note that this is not simple: in R-devel it may be show() not print() that was called (and needs to be dispatched on, although print.default will do that) and the print functionality can be called directly from C code, e.g. by PrintValue. Also, auto-printing as in the example does

I know this may be a pathological case, but I found it while debugging PopCon: Invoking a debugged function prior to the conclusion of setup_Rmainloop() will cause R to crash because R_ConsoleIob is not initialized until run_Rmainloop(). Tested in R-2-6-branch and trunk on Linux. Crash it like this from a shell command line: $ cat >> ~/.Rprofile <<EOF foo <- function()

Hi. It seems that if I put a browser() in my Rprofile.site, I get a segfault. This happens on several machines, several versions of R. Here it the valgrind output when using revision 62797: ==31314== Memcheck, a memory error detector ==31314== Copyright (C) 2002-2012, and GNU GPL'd, by Julian Seward et al. ==31314== Using Valgrind-3.8.1 and LibVEX; rerun with -h for copyright info ==31314==

Hi All My C++/linux program uses Rf_initEmbeddedR to start R and then calls some R functions. Now I try to port it to Windows. Give the fact that Rf_initEmbeddedR is missing in Windows, I try to use the implmentation in Rserve by Simon Urbanek. When I build in MS Visual Studio, I get the following linking error error LNK2019: unresolved external symbol __imp__putenv referenced in function

Hi everyone, I'm trying to create a small C++ program which embed R, but I'm having problems when I try to do it on Windows 64 bits. I have created a minimal reproducible example which is just the src/gnuwin32/front-ends/rtest.c file with the R_ReplDLLdo1() loop, the only difference is that I set the interactive mode to TRUE. Here is the cpp file:

Dear R-developers, even though I may not be the first one to encounter the problem described below, I would really appreciate some help or a link to a forum where this topic is being discussed. Probably I am simply misinformed on the usage of structRstart but see for youselve. I did check multiple forums and the whole internet on the topic without success. I am using the shared library version

I'm running some code in R64 on a Mac OS 10.6.8 that calls a C program through the dyn.load() function. The code hangs after several days of computation, and I've having trouble locating the problem. Can anyone decipher this info from the error report, and tell me if this is a problem in R64, or in the C code? Thanks very much in advance. A few hints: "pa" is the name of the C

Hello, I'm trying to make my Java application work with R, which involves sending and retrieving data and to run R functions from within the Java application. I also need to have "live interaction" with R, to show the R console output (e.g. warnings and print) and to enable the user to enter input when a function asks for it. Therefore I created a simple R console in Java using JRI

The build system rolled up R-2.14.2.tar.gz (codename "Gift-Getting Season") at 9:00 this morning. This is intended to be the final round-up release of the 2.14 series; see the list below for details. (The codename is still not part of the actual sources. That feature will have to wait for 2.15.0, "Easter Beagle"). This release also marks the 3rd anniversary of R-1.0.0. You

The build system rolled up R-2.14.2.tar.gz (codename "Gift-Getting Season") at 9:00 this morning. This is intended to be the final round-up release of the 2.14 series; see the list below for details. (The codename is still not part of the actual sources. That feature will have to wait for 2.15.0, "Easter Beagle"). This release also marks the 3rd anniversary of R-1.0.0. You

Hi all, Can anyone help me understand why an implicit print (i.e. just typing df at the console), is so much slower than an explicit print (i.e. print(df)) in the example below? I see the difference in both Rstudio and in a terminal. # Construct large df as quickly as possible dummy <- 1:18e6 df <- lapply(1:10, function(x) dummy) names(df) <- letters[1:10] class(df) <-

Hi, I have an embedded R, with the evaluation of expressions happening over time during the lifespan of the process. I tried either `R_eval()` and `R_tryEval()` for the evaluation. The issue I have is that the processing of warnings does not happen until the process exits and/or R is shut down. Evaluating `warnings()` returns NULL (NILSXP). It seems like the warnings are stuck in a list out of

Hi all, When I run the following code, R segfaults: text <- "?" srcfile <- srcfilecopy("test.r", text) parse(textConnection(text), srcfile = srcfile) It doesn't segfault if text is ASCII, or it's not wrapped in textConnection, or srcfile isn't set. Hadley -- http://hadley.nz [[alternative HTML version deleted]]