Finding the location of Maximum value in an array?

I know that my questions is like beeing answered. I did try the same solution i find here but I dont know why it does not work below is an example.

A = [1 2 9 4 5 6 7]

[Amins, idx] = max(A)

[Amin, Aj] = max(Amins)

Ai = idx(Aj)

A =

1 2 9 4 5 6 7

**Errro Insufficient number of outputs from right hand side of equal sign to satisfy assignment.

[Voss]

The example provided seems to work without error:

A = [1 2 9 4 5 6 7]

A = 1×7

1 2 9 4 5 6 7

[Amins, idx] = max(A) % maximum value of A is 9, at index 3

Amins = 9

idx = 3

[Amin, Aj] = max(Amins) % maximum value of Amins is 9, at idx 1

Amin = 9

Aj = 1

Ai = idx(Aj) % 1st element of idx is 3

Ai = 3

Answer 1

[Cris LaPierre]

I do not follow what you are trying to do, but below is an explanation of what your code is doing.

 A = [1 2 9 4 5 6 7];
 % Find the maximum value (Amins) and its index (idx). Both are scalars
[Amins, idx] = max(A)

Amins = 9

idx = 3

% Find the maximum value (Amin) and its index (idx). 
% Since Amins is a scalar, Amin=Amins, and Aj=1
[Amin, Aj] = max(Amins)

Amin = 9

Aj = 1

% idx is a single number. Aj is 1, so Ai = idx
Ai = idx(Aj)

Ai = 3

[Cris LaPierre]

Perhaps you have overwritten MATLAB's max function?

Try clearing your workspace.

If that doesn't work, share the result of the following command.

which max

[Stark Volt]

Yes you are correct thanks for pointing out