Count the occurrence of consecutive 1s in 0-1 data in MATLAB

Question

I have a set of 1s and 0s. How do I count the maximum number of consecutive 1s?

(For example, x = [ 1 1 0 0 1 1 0 0 0 1 0 0 1 1 1 ....]). Here the answer is 3 because the maximum number of times 1 occurs consecutively is 3.

I was looking at some search and count inbuilt function, however I have not been successful.

Answer 1

Try this:

max( diff( [0 (find( ~ (x > 0) ) ) numel(x) + 1] ) - 1)

Answer 2

Here's a solution but it might be overkill:

L = bwlabel(x);
L(L==0) = [];
[~,n] = mode(L)

Sometimes it's better to write your own function with loops ; most of the time it's cleaner and faster.