[Rcpp-devel] using Rinside/Rcpp and Eigen

Dirk Eddelbuettel edd at debian.org
Thu Apr 12 17:51:53 CEST 2012


Thanks for posting here.

On 12 April 2012 at 07:31, Cattus Cerebrum wrote:
| I have a c++ project that stores data in Eigen matrices.
| I would like to use R functionality from the c++ code,
| but I am not sure how to convert my data to Rcpp data types
| (e.g. NumericVector).  Should I create a NumericVector
| and copy my data into it, or is there any way to avoid the
| copy by using the common storage?  Eigen matrix has a method
| data() that returns the underlying double pointer, and
| methods that give outer and inner strides of the matrix.

Take a look at the RcppEigen package and its code.


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