MATLAB: Finding which array a particular element is from when comparing two arrays

Question

Hi everyone

I have a question regarding to the use of the minimum function (min()). Is there a such function that finds which element is smaller while comparing two elements from two different array (I know this can be done by using min() function), and then to find out which array is this minimum value is from.

For example, I have two arrays

 a = [0 , 0 , 0 , 0.5 , 0.8 , 1];
 b = [0 , 0 , 0.2 , 0.6 , 0.8 ,1.2];

Both array consisting 6 elements.

Then I used a for loop to find

 for i = 1 : 1 : size(a,2)
    minValue(1,i) = min(a,b);
 end

Is there a way that I can find which array is the element of minValue() array is from?

For example, the third element of minValue() is taken from array 'b', is there a function to do that?

Thank you very much for your help

Tommy

Answer 1

[out,idxarr] = min([a;b]);