search for: tryeval

...at least I think that is what happens, at least on some configurations. Here's a repeatable example: cd R_HOME/tests/Embedding touch tmp.R make tryEval and then (correct) > ./tryEval --slave Error in sqrt("") : Non-numeric argument to mathematical function Caught an error calling sqrt(). Try again with a different argument. [1] 3 versus (non-interactive; no return) > ./tryEval --slave < tmp.R Error in sqrt("") : No...

...fused on how the lang 1 2 3 4 ... set of functions work. I haven't found any relevant documentation explaining it clearly. I have a vague idea but still I cannot understand how I would evaluate an R expression like Covariance <- round(cov(100 * SWX.RET), digits = 4) using lang, install and R_tryEval. 2) What exactly does install do? 3) I wrote the following code: #include <Rinternals.h> #include <Rembedded.h> int main (int argc, char** argv) { SEXP e,val; int errorOccurred; Rf_initEmbeddedR(argc, argv); // library("fPortfolio") PROTECT(e = lang2...

Hello. I'm currently working on the OCaml-R binding allowing to call R code from Objective Caml. As Objective Caml is a functional language, I'd like the binding to be as 'functional' as possible. Specifically, this means that I'd like using the R_tryEval function and all related entry points in libR.so. I've had a look at R-exts.pdf, but R_tryEval is not documented. Could someone please point me to relevant documentation, or the relevant part of the R source code? All the best, -- Guillaume Yziquel http://yziquel.homelinux.org/

Dear all, when working on a project with embedded R, I found out that R-2.0.0 causes a problem where older versions worked OK. Rf_findVar(...) causes the following error when used to find a generic function (such as print): fun = Rf_findVar(...); R_tryEval(fun, ...); Error in function (object, ...) : Invalid generic function in usemethod Alternatively, using Rf_findFun(...) seems OK in this context, but crashes if you call it with an unexisting function name. Rf_findVar does not crash in this case, but returns an unbound value. My workaround for...

Hi, R_tryEval, exported in Rinternals.h but not part of the API, is currently defined as: R_tryEval(SEXP e, SEXP env, int *ErrorOccurred); I'm trying to embed R in an application (basically yet another GUI), and this has been very helpful to catch errors. It would be even more helpful if it also gave acces...