Error in using find

Hello,

I am using find(a==min(a),1) to find the index of minimum element of "a" which is a row vector. I am looking for the first minimum, in fact. However, I am receiving this error:

??? Subscript indices must either be real positive integers or logicals.

I am really confused since I am using the same syntax in another code and it's working perfectly there. But I can't see what might go wrong here.

Any help would be appreciated. Saeed

Answer 1

[Wayne King]

Did you by any chance assign a variable as min? Because min is a MATLAB function, if you also create a variable, min, (never a good idea), you will get that error. Enter:

>>which min

and see what you get. To demonstrate that error:

min = 2;
a = randn(1,4);
find(a==min(a),1)

You should then clear min

Answer 2

[Saied]

I had actually defined min as a variable in my code. I changed it and problem is resolved.

Thank you.