Join this code

t=60/90; d=60/180; n=90; x=linspace(0,t*n,10000); di=[0:t:t*n];

y=pulstran(x,di,"rectpuls" ,d);

plot(x,y,); axis([0 15 -0.1 1.1])

with this

i=0; s=90/60; fdi1=s*2^i;

to obtain a graph with the two signals, the second code must be a signal in sin