Here is a way you can perform this:
gpos = [1 1 1 0 0 1 1 0 1 1]';
[I, ~] = find(gpos == 1);
k = 0;
result = [];
for i=2:length(I)
if (I(i)-I(i-1)) ~= 1
result = [result; k+1];
k = 0;
else
k = k + 1;
end
end
result = [result; k+1];
disp(result);
But definetly, you might write something simpler .
