import matplotlib.pyplot as plt
LINES_PER_TABLE = 5
TITLE_LINE=0
LINE_FOR_X_1 = 1
LINE_FOR_X_2 = 2
LINE_FOR_Y = 3

data=[]
title=[]
x=[]
x1=[]
x2=[]
y=[]

######################################
# In this program, data is read from #
# "data.csv" to be graphed  using x1 #
# and x2 to determine the value for x#
# according too the below equation   #
######################################

#equation here
def equation(x1,x2):
    return x1 / x2



with open("data.csv", "r") as f:
    data = list(f)
    for line in data:
        # get line titles
        if data.index(line) % LINES_PER_TABLE == TITLE_LINE:
            title.append(line)

        #get x1
        if data.index(line) % LINES_PER_TABLE == LINE_FOR_X_1:
            temp = []
            for value in line.strip('\n').split(","):
                temp.append(float(value))
            x1.append(temp)

        #get x2
        if data.index(line) % LINES_PER_TABLE == LINE_FOR_X_2:
            temp = []
            for value in line.strip('\n').split(","):
                temp.append(float(value))
            x2.append(temp)



        #get y
        if data.index(line) % LINES_PER_TABLE == LINE_FOR_Y:
            temp = []
            for value in line.strip('\n').split(","):
                temp.append(float(value))
            y.append(temp)

#calculate x
for i in range(len(title)):
    x.append([])
    for j in range(len(x1[i])):
        x[i].append(equation(x1[i][j], x2[i][j]))

#plot x vs y
for i in range(len(y)):
    plt.plot(x[i], y[i], label=title[i])

ax = plt.gca()
ax.set_aspect(1)
plt.show()