I want to draw this step function by script code.

Answer 1

[Chunru]

t = linspace(0,11)';
x = square(t*0.25*2*pi);

min(x)

ans = -1

plot(t,x)
ylim([-1.1 1.1])

% Manually specify the points
t = [0 5 5 7 7  9  9 10];
x = [0 0 1 1 -2 -2 1 1];
figure
plot(t, x);
box on
grid on
ylim([-2.2 1.2])

[Sol Elec]

But my Y values are not symmetrical i.e. for some value it is 1 for other it is 2. Other thing is even in x axis it is not symmetrical.

[Chunru]

Then you specify time and amplitude as two vectors.

[Chunru]

See the update.

Answer 2

[Sam Chak]

Hi @Sol Elec,

I'll show you the basic concept of how to construct this 5-sec delayed square wave.

t = linspace(0, 6, 601);    % 11 minus 5-sec delayed, need to generate data for nett 6 seconds
f = (2*pi)/4                % angular frequency with a period of 4 seconds
x = sin(f*t);               % base function for the signum function to switch
y = 3/2*sign(x) - 1/2;      % square wave function
plot(t+5, x, t+5, y)        % 5-sec delayed
grid on, xlim([0 12]), ylim([-3 2]), xlabel('t'), ylabel('y(t)')