# connecting sinus function with circle through animation

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nirwana on 20 Mar 2023
Answered: Cameron on 21 Mar 2023
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) Cameron on 21 Mar 2023
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)
drawnow
clearpoints(h1)
clearpoints(h2)
clearpoints(h3)
end
for k2 = length(t):-increment:1
drawnow
clearpoints(h1)
clearpoints(h2)
clearpoints(h3)
end
end