[Rcpp-devel] Rcpp::binding_not_found error

[Romain Francois]

Le 24/09/10 13:07, Alessandro Torrisi a écrit :
> Hi!
>
> I'm new to the group, to rcpp and to C++ also :-P

welcome.

> I'm trying to embed R in a little program which loads a txt file, parses
> it into an object and calls a function developed by our R coders.
>
> What I aim to do is to move one of our actual Java procedures (built on
> Java/Rserve architecture) to C++/RInside/Rcpp, I think we could have lot
> of improvements in this way.
>
> This is a snippet of the procedure:
>
>      R["nav_in"] = Rcpp::wrap(input.nav);
>      R["cashFlows_in"] = Rcpp::wrap(input.cashFlows);
>      R["dates_in"] = Rcpp::wrap(input.dates);
>      R["indexesBmk_in"] = Rcpp::wrap(input.indexesBmk);
>      R["weightsBmk_in"] = Rcpp::wrap(input.weightsBmk);
>      R["benchmark_in"] = Rcpp::wrap(input.benchmark);
>      R["datesBmk_in"] = Rcpp::wrap(input.datesBmk);
>      R["creationDate_in"] = Rcpp::wrap(input.creationDate);
>      R["activationDate_in"] = Rcpp::wrap(input.activationDate);
>      R["finalDate_in"] = Rcpp::wrap(input.finalDate);
>      R["start_in"] = Rcpp::wrap(input.start);
>      R["type_in"] = Rcpp::wrap(input.type);

I think the Rcpp::wrap is redundant, you could e.g. write :

R["nav_in"] = input.nav ;

>      SEXP res;
>
>      string evalstr = "res <- portfolioBenchmark(nav_in, cashFlows_in,
> dates_in, indexesBmk_in, weightsBmk_in, benchmark_in, datesBmk_in,
> creationDate_in, activationDate_in, finalDate_in, start_in, type_in); res";
>      res = R.parseEval(evalstr);
>
> What I obtain is the following:
>
> Errore in .Call("R_isMethodsDispatchOn", onOff, PACKAGE = "base");
>     Numero di argomenti errato (2), ce ne vogliono 1 per
> R_isMethodsDispatchOn
> terminate called after throwing an instance of 'Rcpp::binding_not_found'
> what(): binding not found: '.AutoloadEnv'
> Aborted
>
> Excuse for the message, which is an Italian/English mix...
> What is this error about ?

Which platform are you using ?

There seem to be an initialization problem, which I think I have only 
seen on windows so far, hence my question.

And then... the result of the
> "portfolioBenchmark" function should be a list..How can I convert the
> returned SEXP res into a list ?

You could do this I suppose:

Rcpp::List mylist( res ) ;

> Thanks in advance,
> Alessandro Torrisi.


-- 
Romain Francois
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