how can i get a square wave in matlab ?

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Chad Gray
Chad Gray 2016-2-22
评论： Chad Gray 2016-2-22
I want to plot a periodic square wave in matlab and the period T has to be 3. How can i plot a sqaure wave the repeats itself every (T=3) ? help please and thank you!

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Jos (10584)
Jos (10584) 2016-2-22
Something like this?
t = linspace(0,20,1000) ;
T = 3 ;
x = sign(sin(2*pi*(1/T)*t)) ;
plot(t,x,'b-')

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