How can I shade the area between a curve and a vertical line?

조회 수: 4 (최근 30일)
shahin sharafi
shahin sharafi 2021년 7월 18일
댓글: Star Strider 2021년 7월 18일
I am going to shade the area between the right side of vertical line and the curve as bellow. Could someone help me? I have attached the code as well.
m=60;L=1;J=60;g=9.81;Time_Delay=0.2;beta2=411.67;
%%
syms w
% W=[0.0001:0.1:18*pi];
W=[0.00001:0.1:3*pi];
% time=[0:0.1:1];
%%
omega=w;
tau=Time_Delay;
Kp1=(J*omega^2 + L*g*m)*cos(omega*tau)/(J*beta2);
Kd1=(J*omega^2 + L*g*m)*sin(omega*tau)/(J*beta2*omega);
%%
figure('DefaultAxesFontSize',10,'DefaultAxesFontName','Times')
D_Curve_PD_KP1=eval(subs(Kp1,w,W));
D_Curve_PD_KD1=eval(subs(Kd1,w,W));
%%
plot(D_Curve_PD_KP1,D_Curve_PD_KD1,'color',[1 0 0.75],'LineWidth', 2)
xlabel ('Kp','FontSize',11, 'FontName', 'Times')
ylabel ('Kd','FontSize',11, 'FontName', 'Times')
axis([0,0.05,0,0.025]);
title('TT', 'FontName', 'Times','FontSize',11)
grid on
hold on
%% Line
plot([0.02385 0.02383],[0 0.025],'color',[0 0 0.75],'LineWidth', 2)

채택된 답변

Star Strider
Star Strider 2021년 7월 18일
Try this —
m=60;L=1;J=60;g=9.81;Time_Delay=0.2;beta2=411.67;
%%
% syms w
% W=[0.0001:0.1:18*pi];
% W=[0.00001:1E-4:3*pi];
W = linspace(1E-5, 3*pi, 1000);
% time=[0:0.1:1];
%%
omega=W;
tau=Time_Delay;
Kp1 = @(omega) (J*omega.^2 + L*g*m).*cos(omega*tau)/(J*beta2);
Kd1 = @(omega) (J*omega.^2 + L*g*m).*sin(omega*tau)./(J*beta2*omega);
%%
figure('DefaultAxesFontSize',10,'DefaultAxesFontName','Times')
% D_Curve_PD_KP1=eval(subs(Kp1,w,W));
% D_Curve_PD_KD1=eval(subs(Kd1,w,W));
D_Curve_PD_KP1 = Kp1(omega);
D_Curve_PD_KD1 = Kd1(omega);
%%
figure
mv = D_Curve_PD_KP1 > 0.02383;
patch(D_Curve_PD_KP1(mv), D_Curve_PD_KD1(mv), 'g', 'EdgeColor','none')
hold on
plot(D_Curve_PD_KP1,D_Curve_PD_KD1,'color',[1 0 0.75],'LineWidth', 2)
xlabel ('Kp','FontSize',11, 'FontName', 'Times')
ylabel ('Kd','FontSize',11, 'FontName', 'Times')
axis([0,0.05,0,0.025]);
title('TT', 'FontName', 'Times','FontSize',11)
grid on
%% Line
plot([0.02385 0.02383],[0 0.025],'color',[0 0 0.75],'LineWidth', 2)
hold off
The patch call can be a bit of a challenge, since it also involves creating the logical vector ‘mv’ (mask vector). Beyond that, I eliminated the Symbolic Math Toolbox invocation, recoding ‘Kd1’ and ‘Kp1’ as anonymous functions. (See the documentation section on Anonymous Functions if you are not familiar with them.) I rearranged the plot calls so that the patch will plot first. The curve and line plots then plot over it.
.

추가 답변 (1개)

Alan Stevens
Alan Stevens 2021년 7월 18일
편집: Alan Stevens 2021년 7월 18일
Try
help fill
or
help patch
Although they refer to polygons, you could easily represent your curve as a multi-segment polygon.

카테고리

Help CenterFile Exchange에서 Line Plots에 대해 자세히 알아보기

Community Treasure Hunt

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

Start Hunting!

Translated by