time*channel% s)
  dsr: downsample ratio for cross product series
  smooth: further smoothing of cross-product series
  flags: see below
  init: provide initial clustering
  verbose: display &amp; plot (default=no)
  depth: cluster recursively into 2^depth clusters
  N: target number of clusters [default: depth^2]

 Flags:
  'norm', 'norm2': give each slice the same weight
  'amp', 'pwr': cluster amplitude or power instead of log (default)
 See nt_bias_cluster, nt_cluster1D</pre></div>

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