Get segments from a binary vector

get_segments.m

function segs = get_segments(o)

segs = [];

if o(1), st = 1; state = 1;
else state = 2; end

for i = 2 : length(o)
    if o(i)
        if state == 2
            st = i; state = 1;
        end
    else
        if state == 1
            ed = i - 1; state = 2;
            segs = [segs; [st ed]];
        end
    end
end
if state == 1
    segs = [segs; [st i]];
end

end