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on 19 Oct 2021
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rng(0)
axes(colorm=pink,vie=-[15,24],clim=[-.5,8],Color='b');
hold on
[x,y,z]=sphere(98);
surf(x,y,z,EdgeC='n')
x(randi(99,7),:)=NaN;
surf(x*2,y*2,z*0,hypot(x,y)*6,EdgeC='n')
axis equal
n=[1,2E3];
scatter3(rand(n)*4,ones(n)+1,rand(n)*7-4,randg(1,n),'f','f')
scatter3(2,2,0,20,'c','f')
camva(2)
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