How to find a corresponding matrix value

I have two matricies, Q and W, and I calculated the values of Q from the values of W. I then found the maximum values of each row in Q, but I also need to find the corresponding values of W from the other matrix and I'm not sure how to do that.

Answer 1

[Turlough Hughes]

You can get the corresponding values in W as follows

[mQ,idx] = max(Q,[],2,'linear')
W(idx)

Answer 2

[BOB MATHEW SYJI]

Hope this helps. yis the required vector

W=%your vector
Q=%vector obtained after operations on W
[v,u]=max(W')
for i=1:length(u)
y(i)=Q(i,u(i));
end