Animation of multiple Quivers

Hello,

my problem is a bit more complex but it can basically be broken down to the followning:

I have 2 vectors where one vector starts at the end of the first one. I want to create an animated plot with a "for loop" where the first vector is stationary and the second one rotates by 360° around the end of the first one. My problem is, that i can only create 2 quivers in one plot by using the "hold" command, which then also holds each of the 360° animated timesteps. This is not the intended result because i want to create a rotating vector and not a series of multiple vectors.

Is there a way to solve this ?

Answer 1

[Adam Danz]

The hold command merely prevents the axes from being cleared when you add new graphics objects to the axes. You can manipulate the values of a quiver arrow during the for-loop. quiverrotate from the file exchange might come in handy although it sounds like you could achive this without using a 3rd party function.

Example:

h = quiver([0 1],[0 0],[1 0],[0 1],'off','LineWidth',2);
axis equal 
xlim([-0.5 2.5])
ylim([-1 1])
grid on
theta = linspace(pi/2,2.5*pi,20); 
[u,v] = pol2cart(theta,ones(size(theta))); 
for i = 1:numel(theta)
    h.UData(2) = u(i); 
    h.VData(2) = v(i); 
    drawnow
end