# how can I plot a unit step function?

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Seba.V on 22 Aug 2019
Commented: Harshit Shukla on 15 Oct 2020 at 6:24
How can i plot a unit step function or a piecewise function in Matlab?
ie:
h(t)=u(t-2)-u(t-4)?
or another example:
h(t)={0 for t<0, 1 for 2<t<3, 0 for t>3
Also, how can i plot a periodic square wave with thresholds in matlab?

the cyclist on 22 Aug 2019
This sounds like homework. If so, show what you have tried so far, and ask some specific questions where you are stuck. If you have literally no idea where to even begin, I suggest you go back to your teacher and seek help.
Seba.V on 22 Aug 2019
t=0:0.001:4;
h=(t-2)-(t-4);
subplot(2,1,1)
plot(t,h)
Sorry, yes I am very new to it and just starting out. Dont want to bother you, just seeking advice that can make me underdatand, and yes i have very little idea to even where to begin and if you have any good books or any resources for beginners in signal processing and general MatLab functioning, or even on some fundamental coding techniques needed to suggest, it would be greatly appreciated.
heaviside was what I was looking for!

Star Strider on 22 Aug 2019
The unit step function is also knoiwn as the heaviside step function.

#### 1 Comment

Harshit Shukla on 15 Oct 2020 at 6:24
teri maa ki aakh