How can I insert a detail in the peak of the curve ?
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Hi
How can I insert a detail in the peak of the curve like the attached curve ?
omega = 125.6:0.1:502.4;
freq = 2*pi*omega;
figure (1)
plot (freq,V_86,'g', freq,V_89,'k', freq,V_91,'m',freq,V_92,'c',freq,V_95,'b','LineWidth',2);
legend('FVF = 0.86','FVF = 0.89','FVF = 0.91','FVF = 0.92','FVF = 0.95');
xlabel ('Frequency [Hz]');
ylabel('|Voltage FRF| [V/g]');
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/353027/image.png)
回答(2 个)
Serhii Tetora
2020-8-28
use function axes for zommed peak. you can define those Position and Limits.
and annotation('arrow') for arrow.
Star Strider
2020-8-28
Experiment with this:
f = @(w,c) 1./(w.^2 + 10*w - c+50);
w = linspace(20,80,250);
c = (0.1:0.2:0.9).';
figure
ax1 = axes('Position',[0.2 0.1 0.7 0.8]);
ax2 = axes('Position',[0.25 0.65 0.15 0.2]);
plot(ax1, w, f(w-50,c))
Lv = (w>=43) & (w<=47);
plot(ax2, w(Lv), f(w(Lv)-50,c))
ax2.XTickLabel = [];
ax2.YTickLabel = [];
annotation('arrow',[0.37 0.48], [0.8 0.8])
producing:
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/353045/image.png)
This should get you started. You can use this code with your own data and adjust it to present the plot you want. (You will have to experiment with it.)
2 个评论
Star Strider
2020-8-28
My code runs for me without error (in R2020a). I cannot reproduce the error you reported.
You need to adapt my code to your data and curves. I am simply making it easier for you, so all you need to do is to adapt your vectors to use my code.
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