num_nodes

PURPOSE

SYNOPSIS

DESCRIPTION

 NUM_NODES: number of elemnts in a (fwd or inv model or image)
 n_nodes = num_nodes( mdl );

CROSS-REFERENCE INFORMATION

• mk_common_model MK_COMMON_MODEL: make common EIT models
• mk_image MK_IMAGE: create eidors image object
• num_nodes NUM_NODES: number of elemnts in a (fwd or inv model or image)
• unit_test_cmp UNIT_TEST_CMP: compare matrices in eidors output

• mdl_slice_mesher MDL_SLICE_MESHER A slice of a 3D FEM as a 2D FEM
• show_3d_slices show_3d_slices(img, z_cuts, x_cuts, y_cuts, any_cuts)
• show_fem SHOW_FEM: show the EIDORS3D finite element model
• show_fem_enhanced SHOW_FEM_ENHANCED: show the EIDORS3D finite element model
• show_fem_move SHOW_FEM_MOVE Plot EIT finite element model (FEM) and movement
• join_models JOIN_MODELS: Join two fmdl structures to create one
• ng_write_opt NG_WRITE_OPT Write an ng.opt file in current directory
• fix_model FIX_MODEL: Add useful fields to a model
• get_elem_volume GET_ELEM_VOLUME: VOL = get_elem_volume(fwd_model, map_node )
• mk_c2f_circ_mapping MK_C2F_CIRC_MAPPING: create a mapping matrix from circles/spheres to FEM
• mk_grid_model MK_GRID_MODEL: Create reconstruction model on pixelated grid
• mk_image MK_IMAGE: create eidors image object
• num_nodes NUM_NODES: number of elemnts in a (fwd or inv model or image)
• remove_unused_nodes REMOVE_UNUSED_NODES: identify and remove unused nodes in model
• eit_spice function spice = eit_spice(img, [name])
• fwd_solve_1st_order FWD_SOLVE_1ST_ORDER: data= fwd_solve_1st_order( img)
• system_mat_fields SYSTEM_MAT_FIELDS: fields (elem to nodes) fraction of system mat
• system_mat_instrument SYSTEM_MAT_INSTRUMENT:
• get_img_data GET_IMG_DATA: get parameter data from eidors image object

SUBFUNCTIONS

• function do_unit_test

SOURCE CODE

0001 function num = num_nodes( mdl );
0002 % NUM_NODES: number of elemnts in a (fwd or inv model or image)
0003 % n_nodes = num_nodes( mdl );
0004 
0005 % $Id: num_nodes.m 5112 2015-06-14 13:00:41Z aadler $
0006 
0007 if ischar(mdl) && strcmp(mdl,'UNIT_TEST'); do_unit_test; return; end
0008 
0009 switch mdl.type
0010   case 'image';      fmdl = mdl.fwd_model;
0011   case 'inv_model';  fmdl = mdl.fwd_model;
0012   case 'fwd_model';  fmdl = mdl;
0013   otherwise;
0014       error('can''t process model of type %s', mdl.type );
0015 end
0016 
0017 num = size(fmdl.nodes,1);
0018 
0019 function do_unit_test
0020    mdl = mk_common_model('a2c2',8);
0021    ne = num_nodes( mdl );
0022    unit_test_cmp('test1',ne,41);
0023 
0024    ne = num_nodes( mdl.fwd_model );
0025    unit_test_cmp('test2',ne,41);
0026 
0027    ne = num_nodes( mk_image( mdl ));
0028    unit_test_cmp('test3',ne,41);
0029 
0030    mdl = mk_common_model('n3r2',[16,2]);
0031    ne = num_nodes( mk_image( mdl ));
0032    unit_test_cmp('test4',ne,252);