wrote all of the functions in transform.py to make a scatter plot.

transform.py

@@ -28,7 +28,7 @@ def bounds(data):
     "Returns a list of the smallest and largest numbers in data"
     lowest = minimum(data)
     highest = maximum(data)
-    boundary = [minimum, maximum]
+    boundary = [lowest, highest]
     return boundary
 
 def clamp(value, low, high):
@@ -51,13 +51,14 @@ def ratio(value, start, end):
     numerator = value - start
     denominator = end - start
     ratio = numerator / denominator
-    final_ratio = clamp(ratio, 0.0, 1.0)
-    return final_ratio
+    r = clamp(ratio, 0.0, 1.0)
+    return r
 
 def scale(value, domain_min, domain_max, range_min, range_max):
     "Given a value within a domain, returns the scaled equivalent within range."
-    ratio_d = ratio(value, domain_min, domain_max)
-    ratio_r = ratio(value, 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):
     "Returns the first value for each point in points."
@@ -71,6 +72,6 @@ def get_y_values(points):
     "Returns the second value for each point in points."
     y_list = []
     for i in points:
-        y_value = i[0]
+        y_value = i[1]
         y_list.append(y_value)
     return y_list