Checkpoint 2: I wrote functions for transform.py

It went pretty well. In terms of writing the functions, I skimmed
the instructions a bit too quickly, so I had to reread it to
understand how to pull just the x- or y-coordinate in the last two
functions. The discord was very helpful in figuring out what to do
about the error I was getting when testing the clamp function, in
that two people had already encountered the same error and provided
a fix in the test file.

test_transform.py

@@ -21,14 +21,14 @@ test(minimum, [[0, 1, 2, 3]], 0)
 test(minimum, [[-10, -20, -30]], -30)
 test(bounds, [[0, 1, 2, 3]], [0, 3])
 test(bounds, [[-10, -20, -30]], [-30, -10])
-test(clamp, [[10, 0, 100]], 10)
-test(clamp, [[-10, 0, 100]], 0)
-test(clamp, [[104, 0, 100]], 100)
-test(ratio, [[5, 0, 10]], 0.5)
-test(ratio, [[167, 100, 200]], 0.67)
-test(ratio, [[8, 10, 0]], 0.2)
-test(ratio, [[4, 10, 20]], 0.0)
-test(scale, [[4, 0, 10, 0, 100]], 40)
-test(scale, [[180, 120, 240, 0, 100]], 50)
+test(clamp, [10, 0, 100], 10)
+test(clamp, [-10, 0, 100], 0)
+test(clamp, [104, 0, 100], 100)
+test(ratio, [5, 0, 10], 0.5)
+test(ratio, [167, 100, 200], 0.67)
+test(ratio, [8, 10, 0], 0.2)
+test(ratio, [4, 10, 20], 0.0)
+test(scale, [4, 0, 10, 0, 100], 40)
+test(scale, [180, 120, 240, 0, 100], 50)
 test(get_x_values, [[[0, 5], [1, 5], [2, 5]]], [0, 1, 2])
 test(get_y_values, [[[0, 5], [1, 5], [2, 5]]], [5, 5, 5])

transform.py

@@ -6,38 +6,60 @@
 
 def maximum(data):
     "Returns the largest number in data"
-    raise NotImplementedError
+    maxNum = None
+    for number in data:
+        if maxNum is None:
+            maxNum = number
+        if maxNum < number:
+            maxNum = number
+    return maxNum
 
 def minimum(data):
     "Returns the smallest number in data"
-    raise NotImplementedError
+    minNum = None
+    for number in data:
+        if minNum is None:
+            minNum = number
+        if minNum > number:
+            minNum = number
+    return minNum
 
 def bounds(data):
     "Returns a list of the smallest and largest numbers in data"
-    raise NotImplementedError
+    return [minimum(data), maximum(data)]
 
 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
+    if value < low:
+        return low
+    if value > high:
+        return high
+    return value
 
 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
+    return clamp((value - start)/(end - start), 0, 1)
 
 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
+    return range_min + ratio(value, domain_min, domain_max) * (range_max - range_min)
 
 def get_x_values(points):
     "Returns the first value for each point in points."
-    raise NotImplementedError
+    xcoordinates = []
+    for xcoord,ycoord in points:
+        xcoordinates.append(xcoord)
+    return xcoordinates
 
 def get_y_values(points):
     "Returns the second value for each point in points."
-    raise NotImplementedError
+    ycoordinates = []
+    for xcoord,ycoord in points:
+        ycoordinates.append(ycoord)
+    return ycoordinates