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on 17 Oct 2021
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x=rand(100,1)*16-8;
y=rand(100,1)*16-8;
r=sqrt(x.^2+y.^2)+eps;z=sin(r)./r;
plot3(x,y,z,'.','MarkerSize',15);hold on;
xlin=linspace(min(x),max(x),32);
ylin=linspace(min(y),max(y),32);
[X,Y]=meshgrid(xlin,ylin);
Z=griddata(x,y,z,X,Y,'cubic');
surf(X,Y,Z);colormap(autumn);axis off;
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