[Rcpp-devel] exposing a C++ function to RInside
edd at debian.org
Sun Aug 19 02:31:10 CEST 2012
On 18 August 2012 at 16:24, Stephen J. Barr wrote:
| On Sat, Aug 18, 2012 at 3:46 PM, Dirk Eddelbuettel <edd at debian.org> wrote:
| On 18 August 2012 at 14:08, Stephen J. Barr wrote:
| | Hello,
| | I have a quick design question. I am working on a program that uses
| RInside and
| | RcppEigen, and I want to expose a function back to R. Specifically, I
| have a
| | C++ function with the following signature:
| | double nll_singleton(
| | const VectorXd& theta,
| | const MatrixXd& ua,
| | const MatrixXd& ub,
| | const MatrixXd& Xmat,
| | const MatrixXd& Ymat);
| | I would like to run R's optim over this function, where 'theta' is the
| | that I am optimizing over. Would I use RCpp::InternalFunction for this?
| Per rinside_sample9.cpp, possibly.
| | nll_singleton is going to call MPI and I would rather do it this way than
| | mpi over R, if this is possible.
| What I meant was, rather than recode everything in R and use Rmpi.
| I guess my question was, say I use RCpp::InternalFunction with nll_singleton,
| can I just pass in a vector and a few matrices like:
| >R.parseEval("nll_singleton(c(1,2,3), matrix(1:10, nrow=3), ...etc..")
| I would think that I would have to define some mapping back to the Eigen
I don't know. That's something you will have to work out.
Dirk Eddelbuettel | edd at debian.org | http://dirk.eddelbuettel.com
More information about the Rcpp-devel