Пример #1
0
bool readMatrixFromFile(const std::string & filename, boost::numeric::ublas::compressed_matrix<TYPE> & matrix)
{
  std::cout << "Reading ublas matrix" << std::endl;
  
  std::ifstream file(filename.c_str());

  if (!file) return false;

  std::string id;
  file >> id;
  if (id != "Matrix") return false;

  unsigned int num_rows, num_columns;
  file >> num_rows >> num_columns;
  if (num_rows != num_columns) return false;
  
  matrix.resize(num_rows, num_rows, false);

  for (unsigned int row = 0; row < num_rows; ++row)
  {
    int num_entries;
    file >> num_entries;
    for (int j = 0; j < num_entries; ++j)
    {
      unsigned int column;
      TYPE element;
      file >> column >> element;

      //matrix.insert_element(row, column, element);
      matrix(row, column) = element;
    }
  }

  return true;
}
Пример #2
0
 void resize(boost::numeric::ublas::compressed_matrix<ScalarType> & matrix,
             size_t rows,
             size_t cols)
 {
   matrix.resize(rows, cols, false); //Note: omitting third parameter leads to compile time error (not implemented in ublas <= 1.42) 
 }