lwtDev::VectorSource Node1 lwtDev::VectorSource + VectorSource() + at() + matrix_at() Node2 lwtDev::ISource + ~ISource() + at() + matrix_at() Node2->Node1 Node3 std::vector< MatrixXd > Node3->Node1 -m_matrix_inputs Node4 MatrixXd Node4->Node3 +elements Node5 std::vector< VectorXd > Node5->Node1 -m_inputs Node6 VectorXd Node6->Node5 +elements