I am facing error while executing this code,pls help me to solve this issue

 A = [ 1 12 3 9 5
    11 7 8 14 10
    6 2 13 4 15]
 C = zeros(size(A)) ;
 [val,idx] = max(abs(A)) ;
 for i = 1:size(A,3) 
 [val,idx] = max(abs(A(:,i))); 
 C(idx,i) = val 
  end

[Birdman]

What do you want to do with the code?

[Prabha Kumaresan]

if I run this code the value of idx is displayed as 2,but its not 2,and if i change the value of A to (5*10) or (4*15) the code was not getting executed.

[Birdman]

Ok,but what do you want to see for idx instead of 2?

[Prabha Kumaresan]

why idx is set to 2 even if i change the number of rows in A to 5 or 10

[Prabha Kumaresan]

ok A is 2D. if i change the number of rows in A to 5 or 10 in for loop the command i = 1:size(A,2) whether needs to get changed to i = 1:size(A,5) or i = 1:size(A,10)

[KSSV]

Irrespective of what is size of A..it should be size(A,2)...red about size command in matlab.

Answer 1

[KSSV]

It should be run till size(A,2) not size(A,3)...note that your matrix A is 2D not 3D.