Unity-based normalization to scale data into 0-1 range.

        (values - min) / (max - min)

    Args:
        values: Array of values to be normalized
        min (float, optional): Lower bound of normalization range
        max (float, optional): Upper bound of normalization range

    Returns:
        Array of normalized values

def norm(values, min=None, max=None):
    """Unity-based normalization to scale data into 0-1 range.

        (values - min) / (max - min)

    Args:
        values: Array of values to be normalized
        min (float, optional): Lower bound of normalization range
        max (float, optional): Upper bound of normalization range

    Returns:
        Array of normalized values
    """
    min = np.min(values) if min is None else min
    max = np.max(values) if max is None else max
    return (values - min) / (max-min)