 class="comment">%</span>
0013 <span class="comment">% mean is NOT removed prior to processing</span>
0014 
0015 <span class="comment">% TODO: reimplement using nt_pca0</span>
0016 
0017 <span class="keyword">if</span> nargin&lt;1; error(<span class="string">'!'</span>); <span class="keyword">end</span>
0018 <span class="keyword">if</span> nargin&lt;2||isempty(shifts); shifts=[0]; <span class="keyword">end</span>
0019 <span class="keyword">if</span> nargin&lt;3; keep=[]; <span class="keyword">end</span>
002