# 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):
    bounds = [minimum(data), maximum(data)]
    return bounds

#I don't understand the point of the clamp function at this point. 
def clamp(value, low, high):
    if value < low:
        return low
    if value > high:
        return high
    else:
        return value

def ratio(value, start, end):
    low, high = min(start,end), max(start, end)
    clampedval = clamp(value, low, high)
    ratio = (clampedval-start)/(end-start)
    return ratio


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

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

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