MATLAB: Strange output from sort()

sort

If I sort an array using

[a,b]=sort(c);

I expect the smallest value of c to be at the index of b==1

However, when I do

find(b==1)

I get a completely different and wrong answer (in this case index 85), compared to

find(c==min(c))

which gives met the index of the actual smallest value (index 69).

Can anyone explain what's happening here?

No, the smallest value of c will be at location b(1) . The b output is the original indices of the corresponding entries in a

To get ‘B’, ask for the second output from sort:

A=[25,41,38];
[A_sorted,B] = sort(A, 'descend')
A_sorted =
    41    38    25
B =
     2     3     1

You seem to use the variable n in two ways:

I assume you want to change the second one.

Furthermore, min(A) will give a single value when A is a vector, but multiple values when A is a matrix ...