ploting discrete singnal using heaviside

n = -5 : 5;

y = heaviside(n); stem(n, y) axis([-5 5 -1 2])

 i am writing this code but it gives 0.5 on 0 and for n>0 gives 1

Answer 1

[Star Strider]

That is the definition of the heaviside function.

From the documentation:

• heaviside(x) returns the value 0 for x < 0, 1 for x > 0, and 1/2 for x = 0.

[irtaza anwar]

so how to plot unit step discrete graph for n=-5:5

[Star Strider]

I thought you just did that in the code you posted:

n = -5 : 5;
y = heaviside(n); 
stem(n, y) 
axis([-5 5 -1 2])

That produces the plot I would expect.

You can define the unit step function as:

x = [-5 : 5];
unit_step = @(x) (x >= 0);
figure(2)
stem(x, unit_step(x))

That is not the definition of the Heaviside function, but is an acceptable definition for the unit step function. Use the one that is most appropriate for your needs.