>'!'</span>); <span class="keyword">end</span>
0017 <span class="keyword">if</span> nargin&lt;3 ||isempty(flags); flags=[]; <span class="keyword">end</span>
0018 <span class="keyword">if</span> nargin&lt;4; init=[]; <span class="keyword">end</span>
0019 
0020 <span class="keyword">if</span> ~nargout; disp(<span class="string">'entering nt_cluster_jd...'</span>); <span class="keyword">end</span>
0021 
0022 <span class="comment">% time series of cross products (terms of covariance matrix)</span>
0023 [xx,ind]