Count the index of the array

Hi, I have a array like below: [0 0 0 0 0 0 0 0 0 10 0 0 0 0 15 0 17]

I want count how many numbers >0 in the array (like in this case count is 3 (because 10,15,&17). Can some please help me how to count this in matlab. Thanks in advance

Answer 1

[Azzi Abdelmalek]

If your array doesn't contain negative numbers

a=[0 0 0 0 0 0 0 0 0 10 0 0 0 0 15 0 17]  
out=nnz(a)

[Shoaibur Rahman]

nnz will count the number of all non-zero elements in the array, including negatives. So, this function would be a better choice if you want to do so.

[Mekala balaji]

Great Thank you sir

Answer 2

[Shoaibur Rahman]

A=[0 0 0 0 0 0 0 0 0 10 0 0 0 0 15 0 17];
sum(A>0)

Answer 3

[Javaid Iqbal]

n=numel(A);

[madhan ravi]

no this would give you total number of elements in the array