How to have a just specific part of a plot?

86 次查看（过去 30 天）
N/A
N/A 2021-8-13
评论： N/A 2021-8-14
Hi
For a purpose, I am trying to have a just specific part of my plot only. For example, if you run the below code, you will get figre 1 (attached file), but I want have just part of it that has been shown in figure 2 (attached file). I dont mean about using axis function (axis([0,18000,0,2000]);). I want to eliminate other part of the plot after plotting.
Thank you in advance for you help.
Regards,
Shahin
clear all
clc
% close all
%%
m=60;L=1;J=60;g=9.81;beta2=411.67;
Time_Delayb=0.2;Time_Delaye=0.25;
tau1=Time_Delayb;tau2=Time_Delaye;
KPb=2.15;KDb=0.75;
%%
W = linspace(0, 10*pi, 1000);omega=W;
Kpe=@(omega)J.*cos(omega.*tau2).*omega.^2 - KDb.*beta2.*omega.*sin(omega.*tau1 - omega.*tau2) + L.*cos(omega.*tau2).*g.*m - KPb.*beta2.*cos(omega.*tau1 - omega.*tau2);
Kde=@(omega)(omega.^2.*J.*sin(omega.*tau2) - KDb.*beta2.*omega.*cos(omega.*tau1 - omega.*tau2) + m.*g.*L.*sin(omega.*tau2) + KPb.*beta2.*sin(omega.*tau1 - omega.*tau2))./omega;
%%
figure('DefaultAxesFontSize',10,'DefaultAxesFontName','Times')
D_Curve_PD_KPe=Kpe(omega);
D_Curve_PD_KDe=Kde(omega);
%%
plot(D_Curve_PD_KPe,D_Curve_PD_KDe,'color',[1 0.025 0.05],'LineWidth', 2)
grid on
hold on

请先登录，再回答此问题。

采纳的回答

Scott MacKenzie
Scott MacKenzie 2021-8-13
编辑：Scott MacKenzie 2021-8-13
Follow the plot command with...
axis([0 400 0 120]);
axis off;
set(gcf,'color','w');
Output:
  3 个评论
显示 1更早的评论
Scott MacKenzie
Scott MacKenzie 2021-8-13
编辑：Scott MacKenzie 2021-8-13
Well, in that case, I'm not really sure what you are trying to do.
Are you trying to get just a portion of the curve? If so, something like this might work, assuming you know the start and end indices of the section of the curve of interest:
% plot(D_Curve_PD_KPe,D_Curve_PD_KDe,'color',[1 0.025 0.05],'LineWidth', 2)
startIdx = 400;
endIdx = 600;
x = D_Curve_PD_KPe(startIdx:endIdx);
y = D_Curve_PD_KDe(startIdx:endIdx);
plot(x,y,'color',[1 0.025 0.05],'LineWidth', 2);

请先登录，再进行评论。

更多回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Smoothing and Denoising 的更多信息

标签

产品


版本

R2019a

Community Treasure Hunt

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

Start Hunting!

Translated by