[Rcpp-devel] How to use https://github.com/jjallaire/rcpp-gallery/blob/gh-pages/src/2013-01-05-r-function-from-c++.cpp?

[Xiao He]

Perhaps you can try updating your Rcpp? The latest version is 0.10.3. But I
don't know if that's the reason why sourceCpp is not in your Rcpp library.



On Thu, May 23, 2013 at 9:46 PM, Peng Yu <pengyu.ut at gmail.com> wrote:

> Hi Xiao,
>
> Where is sourceCpp? I don't see it in my Rcpp.
>
> ~/dvcs_src/rcpp-gallery/src$ R
> > library(Rcpp)
> > sourceCpp
> Error: object 'sourceCpp' not found
> > library(Rcpp)
> > sessionInfo()
> R version 3.0.0 (2013-04-03)
> Platform: x86_64-apple-darwin10.8.0 (64-bit)
>
> locale:
> [1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
>
> attached base packages:
> [1] stats     graphics  grDevices utils     datasets  methods   base
>
> other attached packages:
> [1] Rcpp_0.9.13
>
> On Thu, May 23, 2013 at 11:27 PM, Xiao He <praguewatermelon at gmail.com>
> wrote:
> > If you compile it from within R using sourceCpp("cpp_file_name.cpp ").
> Or if
> > you use the package inline, you can do the following inside R.
> >
> > cppFunction('
> >       NumericVector callFunction(NumericVector x, Function f) {
> >            NumericVector res = f(x);
> >            return res;
> >      }'
> >  )
> >
> > Both methods let you directly call the function callFunction(x, f)
> (without
> > having to use .Call())
> >
> > callFunction(rnorm(30), sum)
> >
> >
> >
> >
> >
> > On Thu, May 23, 2013 at 9:14 PM, Peng Yu <pengyu.ut at gmail.com> wrote:
> >>
> >> Hi,
> >>
> >> I'm able to compile 2013-01-05-r-function-from-c++.cpp to the .so
> >> file. But I'm not able to call "callFunction" in R does anybody know
> >> what the correct way is to call R functions in C++? Thanks.
> >>
> >> > dyn.load('2013-01-05-r-function-from-c++.so')
> >> > x <- rnorm(1e5)
> >> > .Call('callFunction', x, fivenum)
> >> Error in .Call("callFunction", x, fivenum) :
> >>   C symbol name "callFunction" not in load table
> >> > callFunction(x, fivenum)
> >> Error: could not find function "callFunction"
> >>
> >> --
> >> Regards,
> >> Peng
> >> _______________________________________________
> >> Rcpp-devel mailing list
> >> Rcpp-devel at lists.r-forge.r-project.org
> >> https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
> >
> >
>
>
>
> --
> Regards,
> Peng
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.r-forge.r-project.org/pipermail/rcpp-devel/attachments/20130523/ab6b3a54/attachment.html>