[Rcpp-devel] Concatenating NumericVectors

Martin Oberhuber martinoberhuber at gmail.com
Wed Aug 22 03:38:04 CEST 2012

Dear Rcpp Users,

I would like to concatenate two NumericVectors. For instance:

NumericVector a( some_STL_vector ) ;
NumericVector b( some_STL_vector ) ;

...  // using Rcpp sugar on a and b

a.insert( a.end(), b.begin(), b.end() );

... // using Rcpp sugar on a

This would work fine if a and be were of type std::vector<double>. However,
NumericVector does not seem to have an insert function which supports the
structure above and therefore this isn't working.

Any ideas on how I could concatenate the two vectors using a different
methodology? The reason I would like to use NumericVectors here is because
I am using Rcpp sugar on a and b and the resulting concatenated vector and
I would like to avoid converting them back and forth between std::vector
and NumericVector.


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