I am using RcppEigen on R. I would like to take a double vector from R layer:

RcppExport SEXP testfunc (SEXP a) {
const Eigen::Map<Eigen::VectorXd> vecD(as<Eigen::Map<Eigen::VectorXd> >(a));
But, number is comming as integer, so I need to get it as integer like this :

RcppExport SEXP testfunc (SEXP a) {
const Eigen::Map<Eigen::VectorXi> vecD(as<Eigen::Map<Eigen::VectorXi> >(a));
So, I need to convert it to the double. Can I convert Eigen::VectorXi to Eigen::VectorXd ?

answered there: http://stackoverflow.com/questions/1345 ... envectorxd