how to equalize row and column values in two matrices

Hello again, sorry for bothering you gus. I will be very grateful if you guys help me for the code

i have two matrix:

A= [0 3 0       B= [6 5 8] 
    4 0 0           2 1 7
    0 0 8]          3 9 4]

I want B to follow the rows and columns of A:

Boutput = [0 5 0
           2 0 0
           0 0 4]

Answer 1

[Ameer Hamza]

Try this

A = [0 3 0
     4 0 0
     0 0 8];

B = [6 5 8
     2 1 7
     3 9 4];

B(A==0) = 0;

Result

>> B
B =
     0     5     0
     2     0     0
     0     0     4

[Raja Zufar]

how to create new variabel? like Boutput

Boutput=     [0     5     0
              2     0     0
              0     0     4]

[Ameer Hamza]

Like this

A = [0 3 0
     4 0 0
     0 0 8];
B = [6 5 8
     2 1 7
     3 9 4];
 
Boutput = B;
Boutput(A==0) = 0;

[Raja Zufar]

thanks a lot, you save my life again sir :)

[Ameer Hamza]

I am glad to be of help! :)