MATLAB: Custom use of heavisde

digital image processingdigital signal processingimage processingmathematicsMATLABsignal

I want to make a function just like the one in attached photo using heaviside command
The graph i get by using my following code,does not continue after t=2
I am trying my following code:(how can i change this code to get output plot like the attached photo) 
clc
clear all
close all
syms t
x=[heaviside(t)-heaviside(t-1)]+heaviside(t-2)
ezplot(x)
axis([-0.5 4 -0.25 1.5])

Best Answer

How to atomate it?
x1 = [1 1 -1 -1 1 1];
x2 = [0 1 1 2 2 3];
y = heaviside(x1);
plot(x2,y)
xlim([-0.5 3.5])
axis equal
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