Get the position of the max and min values of a variables

Hi, so I want the position of the maximun values of a variable my code is:

    pos = 1:numel(lat1);
    b = maxk(lat1,5);
%     index = pos(b);

When I use the line of code indez = pos(b) I get the following error:

Array indices must be positive integers or logical values.

I dont get why. Can somebody help me?

Answer 1

[Stephen23]

[b,index] = maxk(lat1,5);
%  ^^^^^ the second output is the index

[flashpode]

Darn I feel bad cos both answer the question at the same time!