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Mathwork logo - Japanese flag
on 20 Oct 2021
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figure(Color='k')
L=40*membrane(1,25);
surface(L,FaceC=[1 1 .95],EdgeC='n');
I=1:51;
[X,Y]=meshgrid(I,I);
hold on
for i=I
for j=I
f(i,j)=norm([i,j]-[15,26])<=10;
end
end
R=L;
R(f==0)=-inf;
surface(R,FaceC=[.9 .2 .2],EdgeC='n');
view(3);
axis equal off
camlight
material dull