Re: Matrix with vector interface.

Sorry to send the example unfinished. Here it is completed.

Example: Sort the columns of a matrix based on their module:

using namespace boost::numeric::ublas;

template <typedef Vector>
bool less_module(const Vector& v1, const Vector& v2)
{
      return norm_2(v1) < norm_2(v2);
}

main()
{
      matrix m;
      column_facade(m);
      std::sort(m.begin(), m.end(), less_module);
}

Joaquim Duran
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