code: def explode(data):
      size = np.array(data.shape) * 2
      data_e = np.zeros(size - 1, dtype=data.dtype)
      data_e[::2, ::2, ::2] = data
      return data_e
  
label_desc: Use image node_id 1 for calling a global function with example usage: explode(data) and returns: data_e