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on 14 Oct 2021
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a=508;
b=256;
X=linspace(-125,124,a);
[t,r]=cart2pol(X,X'-110);
y=@randperm;
f=bone;
g=cool.*f(y(b),:);
h=winter.*f(y(b),:);
c=rescale([g;h],0,1);
colormap(c);
s=y(a);
for k=s(1:10:end)
image(k*ones(a),'AlphaData',rescale(abs(ifft2(r.^-1.5.*cos(7*rand(a)))),-1,2.5));
hold on
end
axis([0 400 0 400],'off');
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