code: def scale_to_unit_interval(ndar, eps=1e-8):
      """Scales all values in the ndarray ndar to be between 0 and 1"""
      ndar = ndar.copy()
      ndar -= ndar.min()
      ndar *= 1.0 / (ndar.max() + eps)
      return ndar
  
label_desc: Use image node_id 1 for calling a global function with example usage: scale_to_unit_interval(ndar, eps) and returns: ndar