recursively into 2^depth clusters</span>
0016 <span class="comment">%  N: target number of clusters [default: depth^2]</span>
0017 <span class="comment">%</span>
0018 <span class="comment">% Flags:</span>
0019 <span class="comment">%  'norm', 'norm2': give each slice the same weight</span>
0020 <span class="comment">%  'amp', 'pwr': cluster amplitude or power instead of log (default)</span>
0021 <span class="comment">% See nt_bias_cluster, nt_cluster1D</span>
0022 
0023 
0024 <span class="keyword">if</span>