Better Christmas Tree

on 21 Oct 2021

n=203;

x=linspace(0,6*pi,n);

s=linspace(1,0,n);

%Someone informed me the sin looks a lot better than cos

y=sin(x).*s;

r=1:2:n;

hold

Current plot held

plot(y,x,'g',-y,x,'g');

c=repmat((1:6)',17,1);

colormap(prism(6));

t=scatter(y(r),x(r),81,c,'fi','h');

u=scatter(-y(r),x(r),81,c,'fi','h');

% The contest "run" will not peform the animation, but it still fits under

% the 280 character limit. Copy to your own desktop MATLAB installation

% for an amusing little "light show"

for k=1:100

t.CData=circshift(t.CData,1,1);

u.CData=circshift(u.CData,-1,1);

% pause(.05) works better, but is rejected by contest rules

drawnow;

end