( Homepage example: Eigen modes of 2d heat equation ) echo -no number_of_space_dimensions 2 condif_temperature end_initia node 1 0 0 node 2 1 0 node 3 0 1 node 4 1 1 element 0 -quad4 1 2 3 4 geometry_line 1 0. 0. 1. 0. 0.01 geometry_line 2 1. 0. 1. 1. 0.01 geometry_line 3 1. 1. 0. 1. 0.01 geometry_line 4 0. 1. 0. 0. 0.01 geometry_set 1 -geometry_line 1 -geometry_line 2 -geometry_line 3 -geometry_line 4 bounda_unknown 0 -geometry_set 1 -temp bounda_time 0 0.0 0. 100. 0. group_type 0 -condif group_condif_conductivity 0 0.1 control_mesh_refine_globally 1 -h_refinement control_mesh_refine_globally 2 -h_refinement control_mesh_refine_globally 3 -h_refinement control_mesh_refine_globally 4 -h_refinement control_timestep 10 1. 1.0 control_eigen 10 -matrix 10 ( control_print 10 -control_eigen_values -node_eigen ) target_item 0 -control_eigen_values 0 0 target_value 0 0.00768589 1.e-4 end_data