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Problem with plotting a function in Matlab

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AdvaRes

AdvaRes

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Hi guys,

I'm trying to plot a function. When I compile matlab shows no error but I get no curve.

Here is the code:

Vc=linspace(0,1.2)
R3=1./(5*Vc)
R7=9
RL=(R3*R7)/(R3+R7)
D=RL*9
F=1/(10*D)
plot(Vc,F)

Where is the problem ?
 

Matlab for plotting

Hi AdvaRes,

Replace "/" by "./" in the 4th and 6th lines.
Regards

Z
 

Matlab for plotting

Hi zorro,

Actually I did it but I get error:
Matrix dimensions must agree
 

Matlab for plotting

Strange.
I run the code with the changes above and it works.
Which line gives the error?
 

    AdvaRes

    AdvaRes

    Points: 2
    Helpful Answer Positive Rating
Matlab for plotting

Its line 4.
Did you really plot a curve for F ?
What version of Matlab are you using ?
 

Re: Matlab for plotting

Hi AdvaRes,
AdvaRes said:
Its line 4.
Click to expand...
Please check the results of these commands:
>> size(R3*R7) % should be 1 100
>> size(R3+R7) % should be 1 100
>> size((R3*R7)./(R3+R7)) % should be 1 100
Did you really plot a curve for F ?
Click to expand...
Yes, I do.
What version of Matlab are you using ?
Click to expand...
MATLAB Version 7.1.0.246 (R14) Service Pack 3.

Regards

Z
 

    AdvaRes

    AdvaRes

    Points: 2
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Re: Matlab for plotting

I just did what zorro suggested...
Code: 
Vc=linspace(0,1.2)
R3=1./(5*Vc)
R7=9
RL=(R3*R7)./(R3+R7)
D=RL*9
F=1./(10*D)
plot(Vc,F)
and here is the picture:
 

    AdvaRes

    AdvaRes

    Points: 2
    Helpful Answer Positive Rating
Re: Matlab for plotting

make sure you don't have any previus data in your memory with the same name but different size,
clear all;
and try
 

    AdvaRes

    AdvaRes

    Points: 2
    Helpful Answer Positive Rating
Re: Matlab for plotting

Thank you guys !
I couldn't resolve it but I could get a plot only when I compiled it on another PC.
 

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