How can I use a variable in Quiver?

Question

Huiseon Song 2018-9-19

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/419711-how-can-i-use-a-variable-in-quiver

回答： Zenin Easa Panthakkalakath 2018-9-26

I want to use a variable in Quiver.

like this

if true
t = linspace(0,4*pi,1000);
quiver(0,0,sin(t),cos(t))
   end

The final result that I want is an animation a line following the point in quiver.

Thank you!

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Answer 1

Zenin Easa Panthakkalakath 2018-9-26

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/419711-how-can-i-use-a-variable-in-quiver#answer_338452

The above quiver command doesn't seem to be valid as the dimension of the first argument must be equal to that of the third and that of the second argument must be equal to that of the fourth.

Anyway, in order to make an animation, you may use a combination of 'for' loop, 'pause' and 'drawnow' functions. Have a look into the documentation for 'drawnow' here:

https://www.mathworks.com/help/matlab/ref/drawnow.html