unit step function to mimic signal

Im having issues creating my unit step to look like the signal i have it just needs a small sshift that i do not know how to do.

    x = square(t-1);
    y = -2*square(t-1);
    unitstep = zeros(size(t));
    unitstep(t>=1)=-1;

Answer 1

[Agnish Dutta]

From what I understand, you want the falling edge of your unit step signal to coincide with that of the square wave.

If that is the case then the following fix should work:

unitstep(t>=3)=-1    % Instead of "unitstep(t>=1)=-1;".