I do not know how could i change the subplot in figure 2 to look the same as figure 1

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VLADUT-VASILE HADAR 2020-5-5

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关闭： MATLAB Answer Bot 2021-8-20

Hello, i am struggling to get a sinusoid like in the first Figure, the second subplot. Figure 1 is what i have to do and figure 2 is what i did. How could i change the things so it can look like that?

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KALYAN ACHARJYA 2020-5-5

It would be better, if you can provide the code.

VLADUT-VASILE HADAR 2020-5-5

nume='Hadar';

L=length(nume);

n=50*L;

F=1;

Fs=1000;

durata=2;

t=0:1/Fs:durata;

A1=2;

s1=A1*sin(2*pi*F*t);

A2=2 ;

fi0=-pi/3;

s2=A2*sin(2*pi*F*t+fi0);

s3=A1*sin(2*pi*F*t)+A2*sin(2*pi*F*t+fi0);

figure(2)

subplot(3,1,1)

plot(t,s1,'r')

ylabel('Amplitudine')

xlabel('timp(s)')

title('Semnal s1')

ylim([-A1-0.5, A1+0.5])

grid on

subplot(3,1,2)

plot(t,s2,'m')

ylabel('Amplitudine')

xlabel('timp(s)')

title('Semnal s2')

ylim([-A2-1, A2+1])

grid on

subplot(3,1,3)

hold on

plot(t,s3)

ylabel('Amplitudine')

xlabel('timp(s)')

title('Semnal s3=s1+s2')

plot(t(n),s3(n),'^','MarkerFaceColor','g')

yline(0,'k')

hold off

I did some more than the picture above in the code but still i couldn`t change the 2nd subplot to look like in the 1st figure. I cannot get the code for that because its a .p file.

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Answer 1

Mehmed Saad 2020-5-5

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https://ww2.mathworks.cn/matlabcentral/answers/523090-i-do-not-know-how-could-i-change-the-subplot-in-figure-2-to-look-the-same-as-figure-1#answer_430361

编辑：Mehmed Saad 2020-5-5

在 MATLAB Online 中打开

nume='Hadar';
L=length(nume);
n=50*L;
F=1;
Fs=1000;
durata=2;
t=0:1/Fs:durata;
A1=2;
s1=A1*sin(2*pi*F*t);
A2=2 ;
fi0=-pi/3;
s2=A2*sin(2*pi*F*t+fi0);
s3=A1*sin(2*pi*F*t)+A2*sin(2*pi*F*t+fi0);
figure(2)
subplot(3,1,1)
    plot(t,s1,'r')
    ylabel('Amplitudine')
    xlabel('timp(s)')
    title('Semnal s1')
    ylim([-A1-0.5, A1+0.5])
    grid on
    
subplot(3,1,2)
    plot(t,s2+1,'m')% change here
    ylabel('Amplitudine')
    xlabel('timp(s)')
    title('Semnal s2')
    ylim([-1.5 3.2]) % change here
    grid on
  
subplot(3,1,3)
    hold on
    plot(t,s3)
    ylabel('Amplitudine')
    xlabel('timp(s)')
    title('Semnal s3=s1+s2')
    plot(t(n),s3(n),'^','MarkerFaceColor',[0 0.9 0],'MarkerEdgeColor',[0 0.9 0])% Change here
    yline(0,'k')
    hold off

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KALYAN ACHARJYA 2020-5-5

Please accept the answer if it has been resolved. Is the y-scale in 3rd subplot??

Mehmed Saad 2020-5-5

编辑：Mehmed Saad 2020-5-5

Yes, 3rd subplot needs shift and rescale also. We are leaving it to you VLADUT-VASILE HADAR

I do not know how could i change the subplot in figure 2 to look the same as figure 1

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