Display effects of sinus wave

Hi everybody,

I don't understand something and I am sure It will be easy for some of you. I try the following program:

time=0:1/8000:5;
f=400;
Voltage=sin(2*pi*f*t);
figure(300)
plot(Voltage,'.');

If I make a zoom, I find my sinus wave. The thing I don't understand is the form I get if I don't use the zoom. Can somebody explain me why I get this kind of form ?

Thank you !

[Image Analyst]

What do you mean by form? Why are you passing 300 into the figure() function?

Answer 1

[sixwwwwww]

You can see the frequecy is very high. So you need to use some smaller value

 time=0:1/8000:5; 
 f=2;
 figure(300)
 Voltage = sin(2*pi*f*time); 
 plot(time, Voltage, '.');

Hope it will help

[EyalPoid]

Hi, thank you for your answer.

Yes, but I want to know why I get this form.

[sixwwwwww]

You get this form because your data is very spreaded (as you can see the axis in output plot of ur code) but screen resolution is limited that's why you need to adjust the input parameters to make it visible within screen resolution. Hope it explains the reason