eq, d] = ddt(filename)</a>
0002 <span class="comment">% ddt(filename) Read data from a .ddt file</span>
0003 <span class="comment">%</span>
0004 <span class="comment">% [nch, npoints, freq, d] = ddt(filename)</span>
0005 <span class="comment">%</span>
0006 <span class="comment">% INPUT:</span>
0007 <span class="comment">%   filename - if empty string, will use File Open dialog</span>
0008 <span class="comment">%</span>
0009 <span class="comment">% OUTPUT:</span>
0010 <span class="comment">%   nch - number o