Why the plot window is empty ?
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Hi Guys I wrote a code and I want to plot it as shown, but it gives me an empty plot. No curves just the x and y-axis .Any answers?
4 个评论
KVM
2017-11-29
t = linspace(0,100,1) only gives 1 point. Take a closer look to your "t". You probably only have 1 value. So you won't have a plot with only 1 point...Why not using something like: t= [1:1:100]
Rik
2017-11-29
Why suggest that syntax if you can suggest t=1:100? Shorter and more readable.
Using colon notation is best when you know a start and a step, using linspace is best when the step doesn't matter, but the number of steps do.
Connor Ferster
2017-11-30
The comments above, plus, your V is currently equal to zero so you wouldn't even see a point on the plot.
KSSV
2017-11-30
Don't attach screen shot..attach your code.....
回答（1 个）
Ok I do what you say guys but it should not graph like that. The graph should rise not fall I do not know what is wrong
>> L = 10e-3;
>> C =10e-6;
>> R =1000;
>> w = 1/sqrt(L.*C);
>> alpha = R/(2.*L);
>> D1=(- alpha + sqrt(alpha.^2 - w.^2))/2;
>> D2=(- alpha - sqrt(alpha.^2 - w.^2))/2;
>> t = 0 : 0.005 : 0.35;
>> V= exp(D1.*t)+exp(D2.*t);
>> plot(t,V)
[EDITED, Jan, Code formatted]
1 个评论
Jan
2017-12-1
"It should not graph like this"? Matlab does exactly, what you instruct it to do. If you expect something else, either the code or the expectations are wrong.
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