Why is plot not showing a line?

%My plot shows nothing

f0=1000;

k0Prima=((2*pi*f0)/343);

d1=0.3; d2=0.6;

k0Img=linspace((k0Prima/100),(k0Prima/5),1000);

k=k0Prima + 1i*k0Img;

r=1;

p2=exp(-1i*k.*d2) + r*exp(1i*k.*d2);

p1=exp(-1i*k.*d1) + r*exp(1i*k.*d1);

H=p2/p1;

modulo=abs(H);

subplot(2,1,1);

plot(k0Img,modulo)

subplot(2,1,2);

plot(k0Img,unwrap(angle(H)))

Answer 1

[Astarag Chattopadhyay]

Hi,

The size of X-axis data and Y-axis data is not the same in the 'plot' command of the above code snippet. As I understand for this plot command:

"plot(k0Img,modulo)"

It should be a horizontal line parallel to X-axis. The proper command should be like the following:

plot(k0Img,modulo*ones(size(k0Img)))