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 answe

Answer 1

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.

Answer 2

Try this:

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

Answer 3

Cody Problem 15 is find maximum consecutive ones in a 'binary' string. This works quite nicely. As you can tell I'm quite pleased with it! Cody size 19

max(cellfun(@numel,strsplit(x,'0')));

Answer 4

Another possibility:

x = randi([0 1], [1 100]);                %# random 0/1 vector

d = diff([0 x 0]);
maxOccurence = max( find(d<0)-find(d>0) )

which is inspired by an answer to a somewhat similar question...