Home > functions > brain > vb_find_near_member.m

vb_find_near_member

PURPOSE ^

Find member vertex near the root point & make member list

SYNOPSIS ^

function [member_id] = vb_find_near_member(xxF, xxD, Vindx, Rmax, Ndisp)

DESCRIPTION ^

 Find member vertex near the root point & make member list
  [member_id] = vb_find_near_member(xxF, xxD, Vindx, Rmax, Ndisp)
 --- Input
 xxF{i}  : Next-neighbor index that share the same triangle
 xxD{i}  : Distance between next-neighbor and the vertex-i
 Vindx   : Vertex index for root point
 Rmax    : Max radius for neighbor search
 Ndisp   : display process each Ndisp point
 --- Output
 member_id{n} : member vertex index which belog to the root point Vindx(n)

 [history]
 M. Sato 2006-7-15
 2010-05-26 Taku Yoshioka
  Minor change (verbose level support)
 2011-06-20 taku-y
  [minor] Progress message was added. 

 Copyright (C) 2011, ATR All Rights Reserved.
 License : New BSD License(see VBMEG_LICENSE.txt)

CROSS-REFERENCE INFORMATION ^

This function calls: This function is called by:

SOURCE CODE ^

0001 function  [member_id] = vb_find_near_member(xxF, xxD, Vindx, Rmax, Ndisp)
0002 % Find member vertex near the root point & make member list
0003 %  [member_id] = vb_find_near_member(xxF, xxD, Vindx, Rmax, Ndisp)
0004 % --- Input
0005 % xxF{i}  : Next-neighbor index that share the same triangle
0006 % xxD{i}  : Distance between next-neighbor and the vertex-i
0007 % Vindx   : Vertex index for root point
0008 % Rmax    : Max radius for neighbor search
0009 % Ndisp   : display process each Ndisp point
0010 % --- Output
0011 % member_id{n} : member vertex index which belog to the root point Vindx(n)
0012 %
0013 % [history]
0014 % M. Sato 2006-7-15
0015 % 2010-05-26 Taku Yoshioka
0016 %  Minor change (verbose level support)
0017 % 2011-06-20 taku-y
0018 %  [minor] Progress message was added.
0019 %
0020 % Copyright (C) 2011, ATR All Rights Reserved.
0021 % License : New BSD License(see VBMEG_LICENSE.txt)
0022 
0023 global vbmeg_inst;
0024 verbose_const = vb_define_verbose;
0025 if isempty(vbmeg_inst) | ~isfield(vbmeg_inst,'.verbose_level'), 
0026   verbose_level = verbose_const.VERBOSE_LEVEL_NOTICE;
0027 else
0028   verbose_level = vbmeg_inst.verbose_level;
0029 end
0030 
0031 if ~exist('Ndisp','var'), Ndisp = 200; end;
0032 
0033 % Total Vertex point number
0034 Nall  = size(xxF,1);    
0035 % Number of root points
0036 Nroot = length(Vindx);
0037 % Neighbor member list for root points
0038 member_id = cell(Nroot,1);
0039 
0040 % Add self index to member list
0041 for n=1:Nroot
0042     member_id{n} = Vindx(n);
0043 end
0044 
0045 Mcount = zeros(Nall,1);    % Number of root points near the vertex
0046 Iroot  = cell(Nall,1);    % Root index list for each vertex
0047 ddlist = cell(Nall,1);    % Distance list
0048 
0049 % progress
0050 prg     = 0;
0051 prg_all = Nroot;
0052 h_prg   = waitbar(prg/prg_all,'Neighbor search');
0053 vb_disp_nonl(sprintf('%3d %% processed',ceil(100*(prg/prg_all))));
0054 
0055 % Make root index list for each vertex
0056 for n=1:Nroot
0057   % neighbor distance & index
0058   [id, dd] = vb_find_neighbor(Rmax, Vindx(n), xxF, xxD );
0059     
0060   % root index list
0061   for m = 1:length(id)
0062     % Vertex index
0063     i = id(m);
0064     Mcount(i) = Mcount(i) + 1;
0065     % Add root index
0066     Iroot{i}  = [Iroot{i}, n];
0067     ddlist{i} = [ddlist{i}, dd(m)];
0068   end
0069   
0070   if mod(n,Ndisp)==0, 
0071     for ii=1:15; vb_disp_nonl(sprintf('\b')); end
0072     vb_disp_nonl(sprintf('%3d %% processed',ceil(100*(prg/prg_all))));
0073     waitbar(prg/prg_all,h_prg);
0074   end
0075   prg = prg+1;
0076 end
0077 
0078 vb_disp_nonl(' ');
0079 close(h_prg);
0080 
0081 % Exclude root index from root index list
0082 Mcount(Vindx) = 0;
0083 
0084 % one root point for one vertex
0085 Indx = find( Mcount == 1 );
0086 
0087 for m = 1:length(Indx)
0088   % Vertex index
0089   i = Indx(m);
0090   % Root index
0091   n = Iroot{i};
0092   member_id{n} = [member_id{n}, i];
0093 end
0094 
0095 % many root points for one vertex
0096 Indx = find( Mcount > 1 );
0097 
0098 for m = 1:length(Indx)
0099   % Vertex index
0100   i = Indx(m);
0101   % Root index list
0102   ix = Iroot{i};
0103 
0104   % find nearest root
0105   [dmin, imin] = min(ddlist{i});
0106     
0107   % Root index
0108   n = ix(imin(1));
0109   member_id{n} = [member_id{n}, i];
0110 end
0111 
0112 return;

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