coefficnt_matrix.m coefficnt_matrix_sparse.m ComputeRAI.m CtoAbsoluteLocate.m Ctospr.m D1_4.m data.m DrawGrid.m DrawImage.m FirstGridSpecialProcess.m Gauss_Seidel.m Gauss_Seidel_test.m Interpolation.m Jacobi.m Jacobitest.m MAIN.m NEW_Find_coarse_grid.m NEW_Find_strong.m SetUpPhase.m subscript.m