How can I connect the points in plot?

Hello everybody, I am writing some program which I have to use FOR loop for drawing the sine function.I would like to plot them continuously,I can't connect the points. Could you help me out?

Thanks.

f=50;

w=2*pi*f;

t1=0.05;

t2=0.1;

alfa=0.7;

for t=0:0.001:pi/15

    if t-t1>=0

    u1=1;

else

    u1=0;

end

if t-t2>=0

     u2=1;

else

    u2=0;

end

ysag=(1-alfa*(u1-u2))*sin(w*t);

hold on

plot(t,ysag,'b.-')

end

Answer 1

[Iain]

To draw a line, you need to always supply two points.

Before the loop: t_prior = 0; ysag = 0;

Just before the end:

 t_prior = t;
 ysag_prior = ysag;

and plot:

 plot( [t_prior t], [ysaq_prior ysag],'b')

(Do it with a solid line to start - to prove it works)

[Babak]

No. It exploit my sinusoidal figure. It makes a vector to each point.My diagram is sinusoidal which is plotted by points.