How to Plot the Trajectory of a Point
5 views (last 30 days)
Show older comments
Allison Bushman
on 8 Dec 2018
Answered: Star Strider
on 8 Dec 2018
I am trying to plot the trajectory of P4 as it travels in the animation.
hold on
axis equal
axis off
b = 0:pi/60:pi/6;
c = 0:pi/30:pi/3;
d = 0:pi/20:pi/2;
for k = 1:numel(b)
P1=[-15,0];
P2=[-5,0];
plot([P1(1) P2(1)],[P1(2) P2(2)],'LineWidth',5,'Color','black');
A=[0,0];
h{1} = viscircles(A,5,'LineWidth',2,'Color','black');
B = A+[10*cos(b(k)-pi/6),10*sin(b(k)-pi/6)];
h{2} = viscircles(B,5,'LineWidth',2,'Color','green');
C = B+[10*cos(c(k)-pi/3),10*sin(c(k)-pi/3)];
h{3} = viscircles(C,5,'LineWidth',2,'Color','blue');
D = C+[10*cos(d(k)-pi/2),10*sin(d(k)-pi/2)];
h{4} = viscircles(D,5,'LineWidth',2,'Color','red');
P3=D+[5*cos(d(k)-(pi/2)),5*sin(d(k)-(pi/2))];
P4=D+[15*cos(d(k)-(pi/2)),15*sin(d(k)-(pi/2))];
h{5} = plot([P3(1) P4(1)],[P3(2) P4(2)],'LineWidth',5,'Color','black');
drawnow();
pause(0.5);
delete( vertcat(h{:}) );
end
hold off
axis equal
axis off
0 Comments
Accepted Answer
Star Strider
on 8 Dec 2018
Experiment with this:
P4vct = nan(numel(b),2); % Preallocate Before The ‘n’ Loop
then add these two lines after your ‘h{5}’ assignment:
P4vct(k,:) = P4;
h{6} = plot(P4vct(:,1),P4vct(:,2), '--','LineWidth',5,'Color','black');
It will then plot (what I believe to be) the ‘P4’ trajectory as a dashed black line.
That should at least give you an idea of the approach.
0 Comments
More Answers (0)
See Also
Categories
Find more on Graphics Performance in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!