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

def maximum(data):
    "Returns the largest number in data"
    raise NotImplementedError

def minimum(data):
    "Returns the smallest number in data"
    raise NotImplementedError

def bounds(data):
    "Returns a list of the smallest and largest numbers in data"
    raise NotImplementedError

def clamp(value, low, high):
    """Clamps a value to a range from low to high. 
    Returns value if it is between low and high.
    If value is lower than low, returns low. If value is higher than high, returns high.
    """
    raise NotImplementedError

def ratio(value, start, end):
    """Returns a number from 0.0 to 1.0, representing how far along value is from start to end.
    The return value is clamped to [0, 1], so even if value is lower than start, the return 
    value will not be lower than 0.0.
    """
    raise NotImplementedError

def scale(value, domain_min, domain_max, range_min, range_max):
    "Given a value within a domain, returns the scaled equivalent within range."
    raise NotImplementedError

def get_x_values(points):
    "Returns the first value for each point in points."
    raise NotImplementedError

def get_y_values(points):
    "Returns the second value for each point in points."
    raise NotImplementedError