On 7 August 2012 at 14:43, Stephen J. Barr wrote:
| Thanks for the pointer to sugar.
|
| I was just trying to think of a simple example. So my C++ code will be
| essentially:
|
| int main() {
|
| RInside R(argc, argv); // create an embedded R instance
| R.parseEval("X = generateSomeMatrix()");
You need something like we use in the example rinside_sample1.cpp I already
pointed you too:
Rcpp::NumericVector v = R.parseEval(str); // eval string, Z then assigned
to num. vec
as you need __assign__ the result of the parseEval() to something.
This could be as generic as
SEXP mytmp = R.parseEval("X = generateSomeMatrix()");
and you can then use mytmp instantiate an RcppEigen object as you would have
if the object had been passed down from R.
Hth, Dirk
--
Dirk Eddelbuettel | e...@debian.org | http://dirk.eddelbuettel.com
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