Change just the ylims of the Magnitude plot from the bode TF

25 次查看（过去 30 天）
monkey_matlab
monkey_matlab 2016-1-19
评论： Leslie Lamontagne 2023-4-5
Hello,
I am trying to change the ylims of just the magnitude of the bode TF plot but I get the error "Undefined function 'getoptions' for input arguments of type 'tf'. Can you help me change the ylims of just the magnitude response? Thanks. Here is what I have so far:
w=100;
e=0.3;
lgspA = logspace(0,5,1000);
num=[2*w*e (w^2)];
den=[1 2*w*e (w^2)];
test_sys1=1-tf(num,den);
[MAG,PHASE,W] = bode(test_sys1, lgspA);
W1 = W;
MAG1 = 20*log10(squeeze(MAG));
e=0.5;
num=[2*w*e (w^2)];
den=[1 2*w*e (w^2)];
test_sys2=1-tf(num,den);
[MAG,PHASE,W] = bode(test_sys2, lgspA);
W2 = W;
MAG2 = 20*log10(squeeze(MAG));
bode(test_sys1,test_sys2);
ylims = getoptions(test_sys1,'YLim'); % size of ylims for this plot will be 2x1 (mag; phase);
ylims{1} = [-60,10];
setoptions(test_sys1,'YLimMode','manual','YLim',ylims)
legend('e=0.3','e=0.5');

请先登录，再回答此问题。

采纳的回答

Star Strider
Star Strider 2016-1-19
Use the bodeplot function instead of bode. It will allow you to use the setoptions function.

更多回答（1 个）

Martin Hartenberger
编辑：Martin Hartenberger 2021-9-7
You have to first search for all the axes objects in the figure. The third one is the axis of the magnitude plot. After setting this axis as your current one, you can edit the axis limits with ylim and xlim:
G = tf(1,[1,0]);
f1 = bode(G);
axes_handles = findall(f1, 'type', 'axes');
axes(axes_handles(3))
ylim([-60,5])

类别

在 Help Center 和 File Exchange 中查找有关 Response Computation and Visualization 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by