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[Rcpp-devel] Constructor for templated Rcpp::Matrix class from Rcpp::Dimension fails

3 messages · Douglas Bates, Romain Francois

Douglas Bates
# 
I am developing classes for sparse matrices with an Rcpp interface that includes

	Rcpp::Dimension dim() const {return Rcpp::Dimension(nr(), nc());}

	Rcpp::NumericMatrix     asmatrix() const;

The implementation of the asmatrix method begins with

	Rcpp::NumericMatrix ans(dim());

which is a public constructor for the Rcpp::Matrix template but this
fails stating


In file included from
/home/bates/R/x86_64-unknown-linux-gnu-library/2.14/Rcpp/include/Rcpp/Vector.h:58:0,
                 from
/home/bates/R/x86_64-unknown-linux-gnu-library/2.14/Rcpp/include/Rcpp.h:42,
                 from RcppSparse.h:1,
                 from Module.cpp:1:
/home/bates/R/x86_64-unknown-linux-gnu-library/2.14/Rcpp/include/Rcpp/vector/Vector.h:
In constructor ?Rcpp::Matrix<RTYPE>::Matrix(const Rcpp::Dimension&)
[with int RTYPE = 14]?:
RcppSparse.h:110:31:   instantiated from here
/home/bates/R/x86_64-unknown-linux-gnu-library/2.14/Rcpp/include/Rcpp/vector/Vector.h:640:7:
error: ?void Rcpp::Vector<RTYPE>::init() [with int RTYPE = 14]? is
private
/home/bates/R/x86_64-unknown-linux-gnu-library/2.14/Rcpp/include/Rcpp/vector/Matrix.h:49:3:
error: within this context
make: *** [Module.o] Error 1

I can program around this problem by generating the
Rcpp::NumericMatrix from the number of rows and number of columns but
I would class the behavior of the constructor mentioned earlier as at
least an "infelicity" (to use Bill Venables' term).
Romain Francois
# 
Thanks. 

Making init protected instead of private in Vector.h solved it for me. 

I cant commit the fix from the eurostar.

Romain



Le 1 juin 2011 ? 21:36, Douglas Bates <bates at stat.wisc.edu> a ?crit :
4 days later
Romain Francois
# 
Le 02/06/11 12:10, romain at r-enthusiasts.com a ?crit :
Done in rev 3046.