code: def pk_pk_distance(signal):
      """Computes the peak to peak distance.
  
      Feature computational cost: 1
  
      Parameters
      ----------
      signal : nd-array
          Input from which peak to peak is computed
  
      Returns
      -------
      float
          peak to peak distance
  
      """
      return np.abs(np.max(signal) - np.min(signal))
  
imports: import scipy.signal
  from tsfel.feature_extraction.features_utils import *
label_desc: Use image node_id 31 for calling a global function with example usage: pk_pk_distance(signal) and returns: np