docs: def equal(data, num_breaks):
      """
      Calculate equal interval breaks.
  
      Arguments:
      data -- Array of values to classify.
      num_breaks -- Number of breaks to perform.
      """
  
      step = (numpy.amax(data) - numpy.amin(data)) / num_breaks
      return numpy.linspace(numpy.amin(data) + step, numpy.amax(data), num_breaks)