[Rcpp-devel] Pointer to Rcpp::NumericMatrix

[c s]

On Tue, May 29, 2012 at 9:43 PM, Dirk Eddelbuettel <edd at debian.org> wrote:
> You could look at examples/ConvolveBenchmarks where (for the vector case) a
> number of different access mechanisms are compared and times, including
> iterators as well as fallbacks to pointers.
>
> If it helps, RcppArmadillo and RcppEigen have proper (as in: linear algebra)
> matrix types too.

Armadillo allows both direct memory access as well as element access
via iterators:

http://arma.sourceforge.net/docs.html#memptr

http://arma.sourceforge.net/docs.html#iterators_mat