Fill the color in the plot

Hi experts,

I want to fill up the color for which the plot is one and omit the line for which it is zero, how can I do this??

t1 = 0:0.01:30;
G_on = (t1<1.14) | (t1>2.09 & t1<4.54) | (t1>5.64 & t1<6.31) | (t1>6.99 & t1<8.05) | (t1>8.25 & t1<8.58) | (t1>9.09 & t1<10.75) | (t1>12.75 & t1<15.51) | (t1>16.24 & t1<16.75) | (t1>17.75 & t1<19.51) | (t1>19.71 & t1<20.51) | (t1>21.11 & t1<21.95) | (t1>22.50 & t1<23.34) | (t1>24.11 & t1<25.1) | (t1>25.81 & t1<26.64) | (t1>27.11 & t1<28.54) | (t1>29.11);
x = ones(1,numel(t1));
x(G_on)=0;
plot(t1,x,'r')

Answer 1

[Adam Danz]

patch(t1, x, 'b') 
ylim([-1 2])