On 2 March 2015 at 09:09, Duncan Murdoch wrote:
| I generally recommend that people use Rcpp, which hides a lot of the
| details. It will generate your .Call calls for you, and generate the
| C++ code that receives them; you just need to think about the real
| problem, not the interface. It has its own learning curve, but I think
| it is easier than using the low-level code that you need to work with .Call.
Thanks for that vote, and I second that.
And these days the learning is a lot flatter than it was a decade ago:
R> Rcpp::cppFunction("NumericVector doubleThis(NumericVector x) { return(2*x);
}")
R> doubleThis(c(1,2,3,21,-4))
[1] 2 4 6 42 -8
R>
That defined, compiled, loaded and run/illustrated a simple function.
Dirk
--
http://dirk.eddelbuettel.com | @eddelbuettel | e...@debian.org
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