On Tue, 2015-02-17 at 15:57 -0500, Yixuan Qiu wrote: > Hello Rodney, > > If all you need is to pass a pointer to the fit() function (assuming > fit() does not modify x) and get the result a, you do not need to make > a copy. Simply wrap _x by a NumericVector and call the data() method. > > Rcpp::NumericVector x(_x); > > double a = fit(x.data(), n); > > You can even directly use the R API without creating an Rcpp object. > > double a = fit(REAL(_x), n); > > > Best, > > Yixuan
Hi Yixuan: That's exactly what I wanted! However, I can't seem to find that method at http://dirk.eddelbuettel.com/code/rcpp/html Can you please point me to it? >From this... Rcpp::NumericVector x(_x); double a = fit(x.data(), n); I get... error: class Rcpp::NumericVector has no member named data Am I doing something dumb? I'm using Rcpp 0.10.3 w/ 2.15.3 R and GCC 4.4.7 if it matters. Thanks, Rodney _______________________________________________ Rcpp-devel mailing list Rcpp-devel@lists.r-forge.r-project.org https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel