How to combine several arrays?

Dear all,

I have a variable that I named it 'Selec' that was inside a for-loop and it become like this

Selec = [0] [0] [1] [0] [0] [0]

I'm trying to know the location of the highest value. In this example it is 3. So how can I do that?

I tried to use the following 'max' but it is not working

[value,index] = max(Selec);

So is it possible to make Select like this

Selec = [001000] such that I can use 'max' to find the location of 1 which is 3 in this example.

Any help will be appreciated.

Meshoo

Answer 1

[Jos (10584)]

Apparently, Selec is a cell array. You can convert into a numerical array by concatenation:

Selec = {[0] [0] [1] [0] [0] [0] }
Selec2 = [Selec{:}]
[value,index] = max(Selec2)

[Meshooo]

That's correct. Thank you very much.

[Meshooo]

I still have a small problem. Sometimes I will have the following value for Select

Selec = {[0] [0] [0] [0] [0] [0] }

There is no max value because all are zeros. In such a case, if I applied the max then index value = 1 which is not correct.

Selec2 = [Selec{:}]
[value,index] = max(Selec2)

>>index = 1

Do you have idea how to solve that?

[Jos (10584)]

Stricty speaking, zero is the maximum value. If you want to exclude specific maximum values, you could adopt something like:

[value,index] = max(Selec2)
if value == 0,
   index = []
   value = NaN
end

[Meshooo]

You are right. Thank you very much..