Method SubMatrix

inst/include/Rcpp/vector/SubMatrix.h:33–39

    typedef typename MATRIX::Proxy Proxy ;

    SubMatrix( MATRIX& m_, const Range& row_range_, const Range& col_range_ ) :
        m(m_),
        iter( static_cast< Vector<RTYPE>& >(m_).begin() + row_range_.get_start() + col_range_.get_start() * m_.nrow() ),
        m_nr( m.nrow() ),
        nc( col_range_.size() ),
        nr( row_range_.size() )
    {}

    inline R_xlen_t size() const { return ((R_xlen_t)ncol()) * nrow() ; }
    inline R_xlen_t ncol() const { return nc ; }