perhaps you don't need this anymore but now after extract the dimension m, n, we can simply generate arma matrix as mat an_arma_mat(REAL(RA), m, n); similarly you can convert RB to an arma matrix pointer, operate on it then return directly RB to R.
I am testing a simple C++ function that takes a double matrix as argument and which uses routines provided by the C++ Armadillo package. I am aware of the nice capabilities of Rcpp and RcppArmadillo which helps simplifying a lot and that I have already successfully tested. However, I had a hard time trying to figure out how the coercion from a REALSPX matrix to an arma::mat = arma::Mat<double> matrix (double matrix in Armadillo) is done. In this particular case, because of the simplicity of my function, I would like to use base R only. -- Sent from: http://r.789695.n4.nabble.com/R-devel-f909078.html ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
