How do I update a matrix in a for loop MATLAB -

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this question has answer here:

i have matrix , vector u. want run loop update vector u. operation easy, multiple u (result vector denoted z). pick largest element in z (result scalar denoted m). update u dividing vector z m. don't know how index matrix used cell notation might not correct.

 a=[1 2 3 4; 5 6 7 8 ; 9 10 11 12; 13 14 15 16];  u= ones (4,1);    s=1:10      z{s}= a*u{s};      m(s)= max(z{s});      u{s} = z{s}/m(s); end

any suggestions helpful.

you don't have index anything. remove indices. should read docs learn when index , when not to. have matrix operations.

 a=[1 2 3 4; 5 6 7 8 ; 9 10 11 12; 13 14 15 16];  u= ones (4,1);   s=1:10      z = a*u;      m = max(z);      u = z/m;  end

the final value u 

0.2028 0.4685 0.7343 1.0000

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