connecting sinus function with circle through animation

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nirwana
nirwana 2023-3-20
回答： Cameron 2023-3-21
Hi...I am trying to make animation that shows sinus function is a circle as ilustrate in the fig. First my problem is how to rotate the sinus fig (i use camroll (90) but it bit weird). second how to connect the line that walk over sinus and circle?
syms t;
t=0:0.01:2*pi;
x=3*cos(t);
y=3*sin(t);
subplot(2,1,1)
plot(t,y)
subplot(2,1,2)
plot (x,y,'-b');
axis square
camroll(90)

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采纳的回答

Cameron
Cameron 2023-3-21
t=0:0.01:2*pi;
x=3*cos(t);
y=3*sin(t);
tiledlayout(2,1)
nexttile
p1 = plot(t,y);
axis square
camroll(90)
title('t vs. y')
nexttile(2)
p2 = plot(x,y,'--b');
axis square
camroll(90)
title('x vs. y')
h1 = animatedline(p1.Parent,...
'LineStyle','none',...
'Marker','o',...
'MarkerFaceColor','b',...
'MarkerEdgeColor','k');
h2 = animatedline(p2.Parent,...
'LineStyle','none',...
'Marker','o',...
'MarkerFaceColor','b',...
'MarkerEdgeColor','k');
h3 = animatedline(p2.Parent,...
'LineStyle','-',...
'Color','b',...
'Marker','none');
increment = 8;
while true %loop until you close the figure
for k = 1:increment:length(t)
addpoints(h1,t(k),y(k))
addpoints(h2,x(k),y(k))
addpoints(h3,[0,x(k)],[0,y(k)])
drawnow
clearpoints(h1)
clearpoints(h2)
clearpoints(h3)
end
for k2 = length(t):-increment:1
addpoints(h1,t(k2),y(k2))
addpoints(h2,x(k2),y(k2))
addpoints(h3,[0,x(k2)],[0,y(k2)])
drawnow
clearpoints(h1)
clearpoints(h2)
clearpoints(h3)
end
end

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