CODEWITHSUNDEEP
pythonif-statement
гиви
гиви

Reputation: 69

Unexpected output from if/elif structures

I got some if/elif structures. I have no errors when it runs, but the 3 outputs are the same (they should not be). I can not really see, what is the cause of this problem.

The concerned part of my code: (RGB_l is a 1 by 3 matrix, I create a variable for each of its component and apply an if/elif structure, to decide which calculation needs to be done).

    X = float(input("X: "))/100
    Y = float(input("Y: "))/100
    Z = float(input("Z: "))/100

    b = np.array([[X],
                  [Y],
                  [Z]])
    a = np.array([[3.2406, -1.5372, -0.4986],
                  [-0.9689, 1.8758, 0.0415],
                  [0.0557, -0.2040, 1.057]])

    RGB_l = np.dot(a, b)
    print("RGB linear :", RGB_l)

    R_l = RGB_l[0, 0]
    G_l = RGB_l[1, 0]
    B_l = RGB_l[2, 0]

    a = 0.055

    if R_l <= 0.0031308:
        R = 12.92*R_l
    elif R_l > 0.0031308:
        R = ((1+a)**(1/2.4))-a
    print(R)

    if G_l <= 0.0031308:
        G = 12.92*G_l
    elif G_l > 0.0031308:
        G = ((1+a)**(1/2.4))-a
    print(G)

    if B_l <= 0.0031308:
        B = 12.92*B_l
    elif B_l > 0.0031308:
        B = ((1+a)**(1/2.4))-a
    print(B)

Outputs for R, G and B are :

0.967559351663262
0.967559351663262
0.967559351663262

Could you help me to fix my code? Thanks

Upvotes: 0

Views: 45

Answers (1)

KJDII
KJDII

Reputation: 861

All the values you have are greater than 0.0031308

and so the print statement for each is ((1+a)**(1/2.4))-a

the actual value in the array isn't part of the output.

Upvotes: 1

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