code: def compare_annotations(ref_sample, test_sample, window_width, signal=None):
      
      comparitor = Comparitor(ref_sample=ref_sample, test_sample=test_sample,
                              window_width=window_width, signal=signal)
      comparitor.compare()
  
      return comparitor
docs: Compare a set of reference annotation locations against a set of
      test annotation locations.
  
      See the Comparitor class  docstring for more information.
  
      Parameters
      ----------
      ref_sample : 1d numpy array
          Array of reference sample locations
      test_sample : 1d numpy array
          Array of test sample locations to compare
      window_width : int
          The maximum absolute difference in sample numbers that is
          permitted for matching annotations.
      signal : 1d numpy array, optional
          The original signal of the two annotations. Only used for
          plotting.
  
      Returns
      -------
      comparitor : Comparitor object
          Object containing parameters about the two sets of annotations
  
      Examples
      --------
      >>> import wfdb
      >>> from wfdb import processing
  
      >>> sig, fields = wfdb.rdsamp('sample-data/100', channels=[0])
      >>> ann_ref = wfdb.rdann('sample-data/100','atr')
      >>> xqrs = processing.XQRS(sig=sig[:,0], fs=fields['fs'])
      >>> xqrs.detect()
  
      >>> comparitor = processing.compare_annotations(ann_ref.sample[1:],
                                                      xqrs.qrs_inds,
                                                      int(0.1 * fields['fs']),
                                                      sig[:,0])
      >>> comparitor.print_summary()
      >>> comparitor.plot()