g">'...is neither file nor directory'</span>);
0043 <span class="keyword">end</span>
0044 
0045 idxDir=[PATHSTR,filesep,<span class="string">'nt_idx'</span>];
0046 idxFile=[idxDir,filesep,NAME,EXT,<span class="string">'.idx'</span>];
0047 
0048 <span class="keyword">if</span> 2~=exist(idxFile); 
0049     disp(idxFile)
0050     disp(<span class="string">'index file not found'</span>);
0051     <span class="keyword">return</span>
0052 <span class="keyword">end</span>
0053 
0054 load(<span class="string">'-mat