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The end of the rainbow
on 15 Oct 2021
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%Altered to hopefully make it more realistic by putting the rainbow in
%front of the clouds
a=508;
j=@cart2pol;
X=-89:.349:88;
[t,r]=j(X+160,X'-130);
[t,d]=j(X,X');
c=turbo;
b=bone;
f=cool;
colormap([b(60:255,:);flip(f(100:20:185,:)).*b(200:204,:);c(40:11:255,:);b(1:end,:)]);
image(rescale(abs(ifft2(d.^-1.7.*cos(6*rand(a)))),80,195));
hold
image(r,'AlphaData',.25);
axis([0 508 200 508],'off');