lwtDev::InputVectorPreprocessor Node1 lwtDev::InputVectorPreprocessor + InputVectorPreprocessor() + operator()() Node2 VectorXd Node2->Node1 -m_scales -m_offsets Node3 std::vector< std::string > Node3->Node1 -m_names Node4 std::string Node4->Node3 +elements Node5 std::basic_string< char > Node5->Node4