Location of maximum number in matrix??

%Suppose I have a matrix

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

%I want to Find the location of maximum number in the matrix ie of 9.
%How to find it??

    c=max(A); % what to do next ?

Answer 1

[Stephen]

Simply use the output indices returned by max function:

>> A = [2 3 4; 5 6 7; 8 9 0];
>> [B,I] = max(A(:))
B =
   9
I =
   6

where I is a linear index into A:

>> A(I)
ans =
   9

Note you can convert linear indices to subscript indices using the function ind2sub:

>> [R,C] = ind2sub(size(A),I)
R =
   3
C =
   2

Answer 2

[Julia]

Hi,

you have to take the "double maximum", since your c gives a vector. Then you can use the find() function.

>> c=max(max(A))
>> B=find(A==c)

B is just a number. To see how Matlab uses linear indexing click the following link:

http://www.mathworks.com/company/newsletters/articles/matrix-indexing-in-matlab.html