How can I define successive vectors by matlab?

Here is my code sample:

t=[0,4,8,12,16,20];
y=[0.7,0.9,0.9,0.7,0.3,0];
for i=1:length(t)
    u=[t(i) t(i+1) t(i+2)];
    v=[y(i) y(i+1) y(i+2)];
    i=i+3;  
end

Answer 1

[Image Analyst]

Yes, you get new u and v vectors every time - is that what you mean by successive? By the way you should do it this way:

t = [0,4,8,12,16,20]
y = [0.7,0.9,0.9,0.7,0.3,0]
for k = 1 : 3 : length(t)-2
    % Get a new u and v for this iteration:
    u = t(k : k+2);
    v = y(k : k+2);
    % Now do something with u and v....
end