You can use the TEXTSCAN function by specifying delimiters and then use LENGTH function to find the length of each sequence. After that, you can compute the number of occurrences with HIST function as in the example below:
%Creating a binary sequence in a string with no spaces
s = [1 1 0 0 0 0 0 1 1 1 1 0 1 1 0 1 1 0 1 1 1 0 1 0 1 0 1 0 0 1 1 1];
s = sprintf('%d',s);
%Reading the consequences of 1's from the string by using 0's as delimiters
t1=textscan(s,'%s','delimiter','1','multipleDelimsAsOne',1);
% Converting cell array of cell into a single cell array
d = t1{:};
% Computing the length of each run by going through the array and assigning
% it into
for k = 1:length(d)
data(k) = length(d{k});
end
% Using histogram function to compute the number of times for each length
[number_times run_length] = hist(data, [1:max(data)])
To do the same operation for finding run lengths and frequencies of "zeros" instead of "'ones", change the delimiter in the TEXTSCAN function to be '1' instead of '0'.
