1. This returns a matrix rather than a vector:
-- start of file teste.cpp ---
#include
// [[Rcpp::depends(RcppArmadillo)]]
using namespace arma;
using namespace Rcpp;
// [[Rcpp::export]]
NumericVector teste(const vec& x) {
vec v = x.subvec(1, 2); // x
return wrap(v); // x
}
/*** R
teste(1:4)
*
This is known, documented / has been discussed before, and hard to change now
given that 100 CRAN packages depend on RcppArmadillo and its existing interface.
You could write your own converter to SEXP and use that.
Dirk
On 3 December 2014 at 11:59, Gabor Grothendieck wrote:
| 1. This returns a
Envoyé de mon iPhone
> Le 3 déc. 2014 à 17:59, Gabor Grothendieck a écrit :
>
> 1. This returns a matrix rather than a vector:
>
> -- start of file teste.cpp ---
> #include
> // [[Rcpp::depends(RcppArmadillo)]]
>
> using namespace arma;
> using namespace Rcpp;
>
> // [[Rcpp::export]]
> Nume
On 3 December 2014 at 11:14, Dirk Eddelbuettel wrote:
|
| This is known, documented / has been discussed before, and hard to change now
| given that 100 CRAN packages depend on RcppArmadillo and its existing
interface.
|
| You could write your own converter to SEXP and use that.
That said, I a
On 3 December 2014 at 18:30, Romain Francois wrote:
| > 2. If we replace the lines marked // x with
| >
| > return wrap(x.subvec(1, 2));
| >
| > then it fails with a compiler error.
| >
| > error: cannot convert 'const arma::subview_col' to 'SEXP' in
| > initialization
|
| This should be
You just need to put a new template specialization of "wrap" for the
subview_col class in RcppArmadilloWrap.h based on the existing one for the
subview class. And throw in one for subview_row for good measure.
Martyn
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