How to removed dashed lines in fplot
11 次查看(过去 30 天)
显示 更早的评论
Hello, these horizontal dashed lines are showing up unexpectedly in my plot. I'm hoping someone can tell me how to remove them. Thanks!
The code is as follows:
figure(3)
fplot(kre2(omega),'k',[.01,50],'LineWidth',2);
hold on
fplot(-kim2(omega),'-.k',[.01,50],'LineWidth',2)
hold off
title('Frequency Spectrum For Periodic Unit Cell')
xlabel('Frequency, \Omega')
xlim([0,50])
ylabel('Wavenumber, \xi')
ylim([-pi,pi-.01])
view([90 -90])
yline(0,'LineWidth',2)
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/678303/image.png)
0 个评论
采纳的回答
Star Strider
2021-7-8
The dashed lines indicate singularities, and I find them helpful.
They can’t be removed, however it is possible to get the XData and YData from fplot and re-plot them.
syms x
y = 1/(x^2-2*x-1);
figure
hfp = fplot(y, [-5 5]);
X = hfp.XData;
Y = hfp.YData;
Y(Y>100) = NaN;
figure
plot(X, Y)
grid
ylim(hfp.Parent.YLim)
That’s the only way I’ve found not to plot the singularity llines.
Make appropriate changes to get the result you want.
.
更多回答(0 个)
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Digital Filter Analysis 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!