How can I make a square wave plot with discontinuity points?

like this:

[M]

What would be the difference with the square function ?

Answer 1

[David Goodmanson]

Hi Adrian,

If you can create a variable that contains exactly multiples of 180 as a function of the time array, then it's practically automatic:

T = 10  % the period
t = (0:2000)/50;
y = sign(sind(360*t/T));  % or cosd
plot(t,y,'o-')

[mathgeek314159]

Fabulously simple! After hours of searching and errors in MATLAB, this is exactly what I needed. Thank you!