How to graph 4 lines on one plot using a function?

Question

Hunter Nau 2022-4-17

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1698830-how-to-graph-4-lines-on-one-plot-using-a-function

回答： Chunru 2022-4-18

I have been working on graphing 4 lines on a graph based on there theta values. I can not get it to work with a function or plot the points, but there are no errors

^what it should look like

^what I have

%Test Inputs for theta in degrees
P1=angle(10)
P2=angle(30)
P3=angle(60)
P4=angle(95)
% function th=angle(th)
 th=[10 30 60 95];
% i=1:length(th);
x=cosd(th);
y=sind(th);
figure(1)
% plot([P1-x P2-x P3-x P4-x],[P1-y P2-y P3-y P4-y])
hold on
plot(P1-x,P1-y,'m -o','linewidth',2),grid on %x position
hold on
plot(P2-x,P2-y,'k -o','linewidth',2),grid on %y position
hold on
plot(P3-x,P3-y,'b -o','linewidth',2),grid on %x position
hold on
plot(P4-x,P4-y,'r -o','linewidth',2),grid on %y position
legend('10 deg','30 deg','60 deg','95 deg','Interpreter','latex','fontsize',5)
hold off
xlabel('X Position (m)');
ylabel('Y Position (m)');
title('1DOF Planar Manipulator at different angular position')
xlim([-0.2 1])
ylim([0 1])
 
% end