# transform.py
# ------------
# By MWC Contributors
# The functions in this module transform data. 
# None of them are finished; this is your job!

def maximum(data):
    highest = None
    for number in data:
        if highest is None:
            highest = number 
        if number > highest: 
            highest = number
    return highest

def minimum(data):
    lowest = None
    for number in data:
        if lowest is None:
            lowest = number 
        if number < lowest: 
            lowest = number
    return lowest

def bounds(data):
    lower_bound = minimum(data)
    Upper_bound = maximum(data)
    return [lower_bound, Upper_bound]
    

def clamp(value, low, high):
    if value < low:
        return low 
    if value > high:
        return high 
    else: 
        return value



def ratio(value, start, end):
    if start == end: 
        return 0.0
    clamped_value = clamp(value, start, end)
    result = (clamped_value - start)/(end - start)
    return result

def scale(value, domain_min, domain_max, range_min, range_max):
    r = ratio(value, domain_min, domain_max)
    scaled_value = range_min + r * (range_max - range_min)
    return scaled_value

def get_x_values(points):
    x_values = [point[0] for point in points]
    return x_values

def get_y_values(points):
    y_values = [point[1] for point in points]
    return y_values